Thanks for the info. guys, I will look into it further and weigh it up against just getting hold of a 92 or 93 car.

Apart from the ability to tune the OBD1 cars, and I assume extract a few more ponies over the early car, are there any other disdvantages/advantages of the 90-91 vs. the 92-93 ? I see that the later models had vented front discs, sorry rotors ;-) but that still would be on the update/backdate thingy, so no disadvantage there. Anything else I need to consider??

Do you guys ever get to VIR/CMP/RR??

Cheers, Mark