They are a pain to get the big blocks out of. Be sure it doesn't have the small plugs. Then be sure a scrap yard will take it if you pull the motor & trans, most salvage yards don't like them either (at least around here).

if you pull the heads and intake, it will come out the front with the trans still attached. If you pull it out the door, you also have to disconnect the trans. Definitely a sawzall instead of a torch to do any cutting, with a long cut anything blade. That old wood inside of the 72 motorhome will catch fire pretty easy, and will burn pretty fast. Gene