have you heard of the Viper R/T 10/ CS? Carroll Shelby and Fitzgerald Motorsports, made 19 Carroll Shelby Limited Edition Viper Roadsters... even though the plan was to make 50. Seems no one needed to waste more money on a Viper for minimal gains in performance over the stock factory Viper they could buy in a dealership

this is #5, and about 25 years ago, #16 was in the San Diego Auto Museum for about a year. 

18 1995/1996 RTs were built (16 white with blue stripes, 1 blue white stripes, 1 black with gold emblem on the hood) and one 1997 GTS Shelby S/C (Street Competition) which was red with gold stripes.

Modifications were a fresh air intake and better exhaust, plus a remapped ECU, helped bump power to around 500 Hp from the stock 415.

The car was also fitted with a 3.73:1 rear axle ratio in place of the stock 3.07:1 unit, along with racing harnesses for some extra safety.

https://www.barrett-jackson.com/Events/Event/Details/1996-DODGE-VIPER-RT/10-CS-CARROLL-SHELBY-LIMITED-EDITION-ROADSTER-211701

https://www.motorauthority.com/news/1130796_world-s-only-dodge-shelby-viper-gts-cs-heads-to-auction