How many of us are there? Owners of Dodge based RV's?

It should have two plates on it - one from the coach manufacturer (mine's paper) and one from Dodge, which should be metal.

As for the Onan parts, contact Boomer at six five one 437 2826 M-F 10-7 S-S 12-6 cent time
He's the used Onan parts and service guy (new, too) and is in MN. Have the info from the Onan tag and he should be able to hook you up (he's on the Onan Engine Club yahoo group).