I am thinking about buying a 68 413 BB that was in a motor home, it has 66,000 miles on it and comes with the tranny. It comes with everything but the distributer and the carb, he wants $350 but he will take $300. If I get it, it will go in my 76 W100. Any thoughts on this motor? I have done some reading and this motor is a torque monster. If I get it, should I put motor in my truck and go? Or is there some things I should do while the motor is out? Main seals? timing chain? Freeze plugs?