THOSE are YOUR fact Alan ! Mine stand scrutiny : The Fairlady SRL311 was a 5-speed as were the Porsches UNTIL 1968 ! They were then fitted with 4spds (911T) as was the 240Z to Nissan’s largest (often badly misquoted as most important) market. I therefore find it unfair to criticise Nissan’s choice of 4speeds for the North American 240Zs as even the contemporary Porsche 911s had a 4speed gearbox ! The Z was an entry-level sports-car Alan – you can’t deny that – the ‘$3500’ wonder ! The 911S is in another league, hardly comparable with the dumbed-down yank-spec Z. Now, if we’d seen Nissan export the L-gata triple-carbed version or even the Z432 as was considered for a short-while, all comparisons might have been fairer. Porsche’s homologation evolution is one thing, translating that for dealer road-car sales is another. Yes, Porsche goes racing and as you said, they needed sales to be able to do so and obviously some racing developments found their way into road cars – normal. BUT…..all this hinges upon sales and Nissan hurt them in the States which was for both of them their biggest sales-volume export market ! Some world sales figures : http://press.porsche.com/more_about/history/ Begins : 1948 ! 1977 Total Porsche production to date passes 300,000. 1987 250,000th 911 built. 1998 Porsche introduces the first 100-percent all-new 911 model since the first one in 1964 https://newsroom.porsche.com/en/pro...th-911-milestone-seven-generations-13735.html 911 2,0 Coupé from 1965 Total number of vehicles produced: 81,100 911 Carrera 2,7 Coupé from 1973 Total number of vehicles produced: 198,414 http://myautoworld.com/porsche/cars/history/history-911production_/history-911production_.html The figures speak for themselves as far as I’m concerned – Datsun Zs outsold Porsches : by the beginning of 1979, Nissan had sold well over 500,000 S30s whereas Porsche took until 1987 to reach less than half that in 911 sales. Porsche 911 2.0 1964-67 5spd 130bhp Porsche 912 1965-69 4spd 90bhp (entry level) Porsche 911 L 1967-68 2.0 130bhp 4spd / Porsche 911 T 1967-68 2.0 110bhp 4spd (entry level) Datsun SRL311 1967-70 5spd 135bhp / Datsun SPL311 1965-70 4spd 95bhp Datsun SRL311 1967-70 5spd 150bhp (Solex) Porsche 911 E 1968-70 2.0 140bhp 5spd + injection Datsun 240Z 1970-73 2.4 4spd 130bhp Porsche 911 T 1970-72 2.2 5spd 125bhp (entry level) / Porsche 911 E 1970-72 2.2 150bhp 5spd + injection Datsun 240Z 1970-73 2.4 4spd 130bhp* Porsche 911 T 1972-73 2.4 130bhp 5spd / Porsche 911 E 1972-73 2.4 165bhp 5spd+ injection Datsun 260Z 2.6 1974 4spd 135bhp / Datsun 280Z 1975-78 4/5spd 145bhp Porsche 911 2.7 1973-77 2.7 148bhp 5spd + injection but less of an “oh-so-sporting” sports-car already – rather designed for thr softer, US market don’t you think with it’s built-in impact bumpers ? *shame that the triple-carbed version wasn’t available as an option as had been the Solex Roadster version ! I just can’t see why Porsche needed to evolve so quickly if sales were good ; Between 1967 and 1973 they increased their engine capacities 3x and fitted mechanical FI (D-Jetronic ?**) to say ‘in front’ and in 1968 (a year after the dominant SRL311 arrived), the Porsche bodies were modified to improve handling and the entry level car (like the SPL311 has a 4spd box). **Despite Electronic FI being available from 1974 and used by the 1975 280Z (type L-Jetronic), Porsche continued fitting the outdated K-system from 1973.5 until 1994). The date-lines therefore speak for themselves but you know full well that Nissan in the (large and therefore important for foreign exchange, volume production and flagships for the smaller, better selling cars) North American market enlarged their engine sizes to meet emission’s testing…..and perhaps Porsche followed suit ! I respect Porsche but refuse to be bowled over by the publicity, the hype and the automatic assumption that everything they have done was right, performance-related and all going towards some pre-determined goal of sports-car dominance. They’re there first and foremost to sell cars to make money and if sales were hurting – they reacted ! If, as you have tended to do, we move onto modern versions (993/996) we should also include those other models that Porsche has been successfully selling : The diesels and their hybrid cousins: Macan Cayenne Panamera These car have little influence on the evolution of competition cars and please don’t try and convince me that Porsche have conceived or at least revolutionised such engines– Porsche have simply jumped on the bandwagon as Jaguar did when they began producing diesels and 4x4s ; they want to sell cars, anycars and to any market /consumer. Talking of hybrids and competition…..even this : http://blackflag.jalopnik.com/porsche-will-shut-down-its-le-mans-prototype-program-th-1797294277 is a follow on from this from Nissan 2x years ago : http://www.roadandtrack.com/motorsports/news/a27706/nissan-gt-r-lm-nismo-quits-wec-for-2016/ The world just got flatter !