Im thinking z5 s-42/s-47 I would say its a 3 speed with granny and overdrive. I am looking to achieve the cheapest torque monster in my rat rod. 460s in my area are about 500. zf5s are around. top loaders are 1000+ . Also are there stock years for rear sump or will I have to get a special after market pan and re route kit? I did see those for fox body swaps.