I have been contemplating responding to this post. So,...FYI. I had a 1964 Corvair high performance model. It had the high HP engine and 4 speed. It had stiffer springs, anti sway bar in the front and camber compensater in the rear. I had wide racing tires, modified carburetors, headers, and dual exhaust. Weight 2,400 lbs. Top speed 115 mph Freeway driving @ 85 mph 32 mpg. City driving 26 mpg. The best part was that it was very nimble and responsive. This gave it a very high fun factor. I had it in a 4 wheel drift many times and never spun out. I beat the piss out of that poor car it was so much fun to drive.