Have a dumpster delivered to the site. Cut away everything that surrounds the engine. Throw all the junk in the dumpster. Pull the engine out, Throw the rest into the dumpster. Good luck, you'll need some strong backs and a ton of blades to get the job done. It actually isn't worth it unless you're desperate for a next to worthless cast crank 440 engine. If it was me I'd just have a wrecking yard come and haul the motor home away.