Hrmmm, well lightweight, easily adjustable suspension, decent weight distribution (somewhere between 55/45 and 40/60) wheelbase from 2500mm to2900mm is ideal, good selection of engines, and ideally a stiff chassis.
The 240 fits the bill great, but take my word, I know that Formula D and other series are getting tired of the Nissan-fest and are ACTIVELY trying to broaden the fields.
I seriously think a Starion is a great platform ( I have some experience with them, though not drifting) or an affordable European car such as 1992 or newer 3 series, or older 5 series.
Lots of parts available for American cars, but a light, RWD domestic with a decent chassis is RARE!
It really isnt about experience with a car, if you understand setup, and can make any car a good drifter.
-Sean
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At a given day and a given circumstance, you think you have a limit. And you then go for this limit, and you touch the limit, and you think "okay, this is the limit". As soon as you touch this limit, something happens in you so that you can go a little bit further. With your mind power, your determination, your instinct and your experience as well, you can fly very high. - Ayrton Senna