...........But the more Z's I look at with the L series engine in, the more I'm warming to keeping the L28 and tuning it.
What are my options, and the best order to go about them. I've read on a few US boards that the standard efi system is gash, and is unmodifiable and unreliable. (its also ugly as sin, under my bonnet looks messy and unruly with all the emissions related pipes and fuel pipes, and wiring. ............
Why not ditch the standard Fi, fit a 240Z Hitachi/SU set-up, decent exhaust and drive it for a while? Then decide based on how you feel about your Z.