recently purchased an 84 chevy swb. mild 355 small block, four bolt mains, flowtech headers, th350 trans, mild shift kit, 2000 stall. have lots of parts to go in still. got a 12 bolt rear and i just eaton posi unit for a hundred bux brand new. my manager didn't know what it was. got a lunati cam and some other go fast goodies needs a lil body work , mainly over the rear wheel wells but i got the patch panels for it.