What engine is in that motorhome???

If I were you, I'd get in my truck and drive an hour and pick up ALL of this big block stuff for $400 and let Grandpa keep his motorhome. You'll have to deal with it eventually. We are paying someone $300 to get rid of Grandpa's non-running motorhome as I type this.

Mopar Big Block Parts
$400 for enough parts for 2 blocks? That's a cry for help

Funny thing about RVs, they don't last as long as regular cars nor do they get used as much, yet they cost so much to buy then cost to get rid of. At least opt for the smaller cheaper trailers or campers.
Random question: why aren't motorhomes diesel instead of gas? I'd imagine they'd be more efficient