This one : Fujimi 121901 Lamborghini Diablo SV '99
It has extra steering wheels, various interior parts (seats, dashboard, gear lever, pedals, etc), clear parts, upper engine, rims .. many parts from all the versions they offer.
I think I will do a cup version from the Fujimi kit, I'm very into racing right now (Pantera LeMans, Bugatti LeMans, a bunch of GT2s from various teams, F40 and so on)