MR RS Doug or the 9 GT, both come with the stronger Diff, they're great cars, very punchy around the 400-420 bhp mark too and not too much needed to get them there, if your budget can stretch opt for the 9 GT but they're getting harder to find and prices are rising, if you do buy one the only person I'd PERSONALLY use to maintain it is Sheady, he knows them inside out bud.

Main thing to look for is Rust on them now believe it or not they do go underneath, then usually stuff with any performance car, clutch wear, brakes, accident damage, AYC, they suffer stone chips quite badly, service history etc etc.