Ill have to say the EP82
They have so much potential, stock they are pretty crap, but simple front mount i/c , pod filter, exhaust and more boost and you have around 160hp at the flywheel
then theres new turbos, manifolds, new ecu's, injectors, fuel pumps etc
the list of availiable mods is endless, the great thing about ep82's is that upgrade parts are just standard parts on bigger cars
cheers
Al