Any opinions here of selecting a late 60's truck 12 bolt for 500 ft lbs for use in hot rod projects? I have had really good luck over the years with all things 12 bolt and I do know there are differences from car to truck. My problem is its very easy to find 60" truck housings and nearly impossible to find any narrow car stuff around here. And the biggest deciding factor is that the cost is about half to completely go through a 12 bolt versus buying an aftermarket 9". Thoughts please?