We have a 1994 Class A, P-30 with a 6.5 turbo diesel. Bought it new. About five years ago at around 175,000 miles we replaced the engine with an AMG P400 and rebuilt the transmission. Did this as 'preventative' measure to minimize the chances of a serious and expensive breakdown in the middle of nowhere (getting a bit old for major problems on the road). Now have 230,000 miles on the rig. Also rebuilt the front end a while back to correct some wandering, etc. Plan to keep this thing until either it dies or we do. We owned four class As prior to this with Dodge 440 and GM 454 engines. Those all got about 7.5 miles per gallon. The diesel gets 11.5 to 12 MPG. Some noise at idle and low speeds, but can't tell the difference at highway speeds. Would surely do this again, am very happy with the experience.
1994 Georgie Boy Swinger
6.5 TD Chevy P-30