Mark,
My car is a early 1990's HPC, Vx XE engine with Injection throttle bodies, not sure about power, probably somewhere between 180bhp and 200bhp.
5 speed gearbox (not sequential)..semi-helical by SPC, with Quaiffe LSD.
Tyres are Bridgestone Re720 (but also have a set of Yokohama A32's should these be required for the class).
Hope this is enough information.
Thanks
Gram