These are my choices
For Tuning - Honda Civic 95/98, Toyota Supra, Nissan 300ZX, Skyline GTR R34 V-Spec, Honda CRX
For Drifting - Nissan Skyline R34/ Nissan 300ZX/ Silvia S15
Supercars - Skyline GTR V-Spec R34/ GTR R35
Rallying (Includes racing, tuning aswell) - Subaru Impreeza WRX STI '99 and Evo 6 & 10
There's loads more though that i Love:P