The Supra was originally intended to compete with the Euro cars Ferrari, Lambo, at a price that normal people can afford. In turn they are a very well built car and there are a ton of parts for them both OEM and Aftermarket, if you choose to build or not.
I'd go with a 93' or later as I prefer that body style, with the GTE and 6 speed, of course you could drop a handful of other motors in the chassis.
I'm also a fan of Second Gen Integra production stopped in 93 for those.
A 93 Civic is a another good choice... In fact 1993 was a good year...
Alas I'd take any of the above, but I drive a big Truck so this may not be of any help. LOL