The engine is a Powertech V8, if it is 2.8 L then it is 460hp and 250lbs/ft.
The guy who developed it is called Ted Hurrell, he's a great guy and when I was doing hillclimbing seriously he built me a 1370cc GSXR that produced 215 bhp and 115 lbs/ft back in 1990, which was the Dog's Bollaccos at that time and set records here in Ulster as well as in England. This V8 engine has just won the British Hillclimb Championship, so they have a good pedigree and Ted is a good guy to deal with for any support and back-up, especially if this is going into a different aspect of motoring.
Cheers
Mike