Since it is almost identical, if you do choose the Cat 3176, you can replace it with the C12. Good Luck, TomC
Again the Prevost if you must build. I understand the possible reasons. Cost upfront--delay cash outlay..over time... personal pride of the build...the challenge... to be different.. look at my project! Do you see anything normal about mine? Parts and tech support for your coach from prevost next to none! visit prevostcar.com look up under tech publications and you will find wiring diagrams for your coach by unit number. The wires have numbers tattooed on them every few inches. If you have 70 or 8o grand laying around you can prob buy a factory conversion of same vintage ready to roll. Prob a home done one in the 30-40 range. if you lucky. Just my opinion--If I wanted to be like everyone else well you finish that thought..........
I would take the Prevost and not worry about the tranny as if it works ok now you may not use it enough to fail as an RV it won't be doing start and stop driving. No doubt you won't accumulate the miles that a commercial rig does. Jerry