If its on a Ford chassis of any MFG, of that period, there could be some handling problems.
It would require adding additional leaf springs or air bag system to the suspension to carry the Newmar coach box.
I had two, KS & MA that these corrections were made and the coach's were excellent for driving after.
The 37' coach's all were extended on wheel base, over hangs on any MFG coach you would have to be aware of.
The Newmars were not that troublesome as other MFG coach's I have owned.
Tail wagging the dog from passing trucks and buses can be corrected with a rear
track bar on rear axle which I have had on all my coach's.
The Workhorse tracks true with hands off wheel.
Now if its on a Workhorse chassis it will be a different experience, support of coach box was excellent but that chassis had a porpoise problem and was corrected by the addition of
good shocks, and there is a recall under way for
new brake calipers, which I just had done yesterday.
Only cost to you maybe turning of disks and new brake pads which more than likely need to be changed.
I wouldn't give up my Workhorse for anything, but than again I'm to old to look for a new coach.
Welcome to the forum & irv2.