I drive my friends 71 Mach 1 SCJ every summer to the storage place and back for him and that thing is fast for an all original car, the thing has over 11:1 compression stock a solid lifter cam and 4:10 gears with a Detroit Locker. I would say it's the quickest un-touched muscle car I have driven, it's had belts, plug wires and a carb kit done to it since the day it rolled out of the factory.