changing the rear seal on a 351m

o.k. guys and gals, i have a 79 f150 4x4 with (of course) a 351m,4spd tranny and a big old leaky rear seal (barley starting to leak) i have changed out a few rear seals on various trucks (4x4's mostly) without pulling the engine out.
that being said i was looking at everybodies favorite manual (haynes, bleh) and it says i need to yank the engine, loosen all main caps etc. etc. .
my question is, can i just pull the pan in the truck, (i have had it off like that before), and remove the rear cap and change it? or do i need to call a friend to help pull the hood off?

yes the bottom end is fine, it's just age eating at the seal. thanx!

wow i'm quite suprised nobody has an answer for this...

I think that may be a 2 piece seal which as you know you can do through removing the oil pan
Call the parts store

yes it is a 2 piece seal. it just funny that all the other manuals i have say to just pull the pan and cap, and this particular manual (but only for the 351m) says i have to pull flywheel, loosen all main caps and slightly lift the crank to change it out, but only for the 351m.
i'm going to give it a go this weekend anyway and see if it can be done, i think it can. even if i have to pull the engine, it only takes an hour or so with a couple of friends, beer, pizza....mmmmm pizza.....

Cool beans

You can Doo eeet!