Sorry, didn't read the whole thread but I did find this video. Old motorweek episode. Has the 300zx turbo, 3000gt vr-4, mkIV supra, and 3rd gen rx-7, my personal fav
See 3:25 for the supra section.
$49k (1990's dollars!)
320 hp/315 lb-ft Toyota spec?
5.8 sec 0-60 mph
14.1 @ 105 mph 1/4 mile (we all know that depends heavily on many factors)
I've always like the Supras though, they are mean as hell and it doesn't take much to make a lot of reliable power.