Very slammable! The torsion bar schnozz is the best deal going! I have the four "reversed" wheels ya need (with 8" rims), I can swap with ya for the rims ya got on there when the time comes and they'll take "internal hump" moonees. But it's gonna beg for some red stripe tiger paws to complete the look!
And remove two leaves from the rear spring pak to level it out (or use lowering blocks, I have a couplea sets of those also).
None of the above costs squat! And you will end up with a ride superior to the 'burban that no doubt gets much better mileage.
The 440 is gonna actually take around 100>125 lbs. Off the nose iirc, and the entire package can be pushed back and slightly down prolly about 2" and still keep the fan centerline in the shroud.
Since the motor package issa motorhome app, it's got the superduty looooong tail on it. No slipyoke, it's a direct bolt-up. So that combined with a rearward shove of the package means the two piece driveshaft can go away also, and put a slip yoke on the rear axle end.
However, that tranny yore gittin' "might" have a parking brake (drum) mounted on the tail also which would be great!
And...make sure you get the cable shift setup outta the motorhome, that would really be great to mount in the dash! I didn't think of that this morning. That trans cannot be remade into a "pushbutton" model, but the stick in the dash is like a real one arm bandit pre-electronics!!
There might be a few pieces you could use on wilbur settin' out back (the 1300 flatbed). Wes is supposed to come git his bed to go on some project he's got goin' on. Ask maranda how she feels about settin' up the azzend slammed with a dually axle????