In days past, I used to bench press the danged things. Wonder if that's part of the reason my shoulders are such a wreck now?
When I pulled the 420 in my 3/4 ton, I dropped it with a floor jack with the shifter still in it, which gave me something to stabilize the tranny while I lowered the jack. Rolled it off the jack, laid it down and slid it out.
Putting it back in I was a bit smarter, if that's possible. Used the engine hoist and put it in through the cab. I then lowered it onto the floor jack and left the hoist hooked up. Slid her forward and bolted her on.