Raw, cheap balance at your disposal. The '68 - '75 SR is the perfect blend of lightweight fun and track dominance, being a go-to for customer racing teams back then. Conway Motorworks produced it with two engines: A 2.0l Inline 6 and a 3.5l V8, both just downscaled engines from the Preston Sabre: https://scratch.mit.edu/projects/1163947490/ , making 100 and 204 HP respectively. Price in today's money is $45,000/£24,003 for the higher trims.
Designed by Nathaniel Reilly. The car runs on Macpherson Struts and... Leaf Springs (Hence why it was so cheap). My first car! Space/Click car for next costume.