Asside from the DDEC Info screen being backlit in green vs black, I don't recall any difference in dash configuration between our 2002 XLII ( previous coach) and the 2000 "H"3 (current coach).
If your older coaches have a DDEC Info screen that is back-lit in black, it is a replacement. If it is green, that's the original. Anyone having a Info Screeh problem, Dave Jacoby at Prevost Dallas has access to rebuilt units for less than 1/2 the cost of new. That's what we did!
Jim and Chris
2001 Featherlite Vogue XLV 2 slide with Rivets-current coach, 1999 shell
Previous 22 years,
We have owned every kind of Prevost shell but an H3-40