For years, I had a 1970 'tin-top' VW Westfalia camper, i.e. one without the pop-up. Used it to travel to many car shows and meets when I was an editor for Car Collector magazine.
The camper had a later 1600 dual-port motor, with a fair number of mods: big barrels, header, Bosch dist, Holley 200-cfm 'Bug Spray' carb, etc., and would do an indicated 100 MPH (I don't claim it would actually do that speed...) on level ground.
The problem was that I didn't have the scratch then to intall a counterweighted crank and it would pound out the center main bearing about every 20-30,000 miles of hard running so I'd have to drop the motor and put new bearings in every so often. My ex was helping me tighten the gland nut on the flywheel one night before a trip, using a six-foot cheater pipe on a 1/2-inch breaker bar, when it sheared at the base of the socket. She was hanging her full weight (112 pounds) off the bar while I held the motor down and when the bar snapped and she fell hard, breaking her leg in two places.
I guess it's understandable that she wouldn't help me work on cars after that... LOL.
When we had our second son, the camper simply wasn't big enough for all of us and I sold it after almost 20 years of ownership.
Yes, I wish I still had it, too.