Maybe it is just me, but given that you will be screwed if the rear seal leaks after you attempt to 'sneak, it in, and you have the engine out of the truck, why not remove the crank and replace the seal in a manner which is much more likely to work.
I realize that you have to pull the timing cover and front plate.
But if the rear main seal is leaking, there is a good chance that the front seal has some wear as well and you can fix that at the same time. I have never tried the sneaky Pete before, but as much trouble as it to do it correctly with the crank removed, I am really not ready to take on the challenge of the sneaky Pete. Might consider it if I am stranded a long way from home without tow truck money.
Carl
Carl
