'70 K10--Head swap with engine still in truck

[zac]

My '70 K10 suburban has a good short block and terrible heads. I have a set that would solve the problem and make the truck much more driveable until I get my 406 done--machine shop I want to use is massively backlogged. With the engine sitting so far back it looks pretty tough. I really don't want to take the engine out until the new one is ready, along with the rebuilt trans and transfer case. Not nearly as easy as the square bodies, obviously. Anybody tried it?