Have a buddy to help, those dang things are heavy. Use a jack to lower and raise it, that way the 2 of you can balance it and wiggle it into place. When installing it try to line up the converter, to flexplate bolts before mating the trans to the block. And before tightening any bellhousing bolts, get the nuts on the converter to flexplate studs. Also if have an old drive sahft, take off the yoke and stick it in the trans to keep any fluid from coming out. Even if you drain the pan fluid will still be in the internals and find it's way to the tail shaft.