Im just a dreamer : 440 vs 360 magnum

If you are leaving the 440 "as pulled from the motorhome" ... the 360 with the performance components will be faster, if that's what you want. But I like the 440 in that "boat" if you are willing to do at least a little bit to it
Dual plane, Holley 750, Whiplash cam and Headers would make for a decent 440 for very little money.
It would walk all over a 380 horse 360.