Hey Alan, a couple of tricks, first, if you have the old block and trans you may want to get an engine leveler and try to pass the block and trans in from the top- that way you will be sure you have the car high enough to guide the transmission in without damaging it. You'll probably need some kind of roller mechanism to rest the transmission yolk on as it moves rearwards. The box might work in Gumby's car but not the one you're building. It seems to be coming along quite well, I too am looking forward to the finished product-