If you just want to replace the crank and everything else is OK, then it shouldnt be a problem. Just drop the tranny, take off the tensioner, lower the timing side mount, take off oil pan, desconnect rods and push them to top of head, take off the oil pump, and rear seal mount, drop crank and throw it in neighbors yard, install new main bearings std., put oil pump back on, rear main mount back on, install rods w/ new std. bearings, install new thrust bearings, put std. main bearings on main caps, tighten the caps / oil pick up... the ovious stuff to get it on the road.