And that was $60,000 in the early 1990's for some of those cars, probably worth a hell of a lot now (inflation an all that.)
You just have to look at some of the features on the cars to see how ahead of the curve they were. Digital dashes, in car Nav/DVD/TV, HUD's, Automatic climate controll and so on. Then there is the mechanical side of it as well, look at how quick the 33 GT-R was around the ring.