How about some early 80's camaros,get a good 350,4 spd combo,lots of the rearends were posi if you find a z28.Or try an early 90's caddy,impala,buick they had they lt-1 in them.I had one in a 94 caddy and had 660,000km's on it when i sold it and still ran like a top.I've passed a few of them up...