I can't remember what I used the first time, though a Carlton did enter the events. More recently I entered them in a turbocharged Lotus Elan S1. Spec was: all engine mods except NOS (210bhp) Stage 3 weight reduction, Fully customisable tranny with carbon driveshafts etc. I did not install an LSD, and ran the car on standard suspension. It was 130 to 145 a-spec points but the car walked all the events. It may be more challenging with about 180bhp or without the weight reduction or both.