7: 1995 Guldstrand GS90
Similar to other rare Corvette models that were put together back then, the Guldstrand GS90 was another novelty. The car was designed by Dick Guldstrand, a famous Corvette racing champion. He used the ZR1 as the base for the car and charged a $200,000 sticker price for the customization.
Needless to say, this is one of the best-looking C4s that you can get and rare to boot. The interesting look and feel of the car are only outclassed by the amazing performance that it has on the roadways. The GS90 might not be a mainstream Corvette model but it is one that certainly stands out from the crowd.