I thought the 4500's up had a different displacment isuzu. I faintly remember reading an ad for one and it wasn't a 6.6 but I really don't know. I've seen a motorhome race a moped at pittsburgh raceway one evening during college. The moped spanked it off the line but the old 360 came back strong.:hehe:
Bump for motorhome update!
A pic of the beast with a lil smoke would be nice! :rockwoot::rockwoot: