I think he said it is all 1 piece assembly, the driveshaft and carrier bearing.Havent talked to him yet today, only last night.It is grumbling like a vibration, so it sounds like a carrier bearing to me.Got a 12' SRW Ford gasser, 6'6" high inside,75" wide, roll-up door, side door, stand up from the front seats to the cargo area.Figured out how I can have a sleeper, without sacraficing the 12' space.Gotta put e-track on the floor, and move the front bulkhead back 48" and cut the opening out large nough to accomadate a third skid if needed, to slide in the sleeper.Bed will be removable to make this possible.Side door will make access easier.But these 2 things I need to do before I go into service with it.I have the e-track for the floor.Brought alot of tools from home to do this here at the shop, hopefully the weather is good to me.I need to keep this vehicle as light as posssible, eventually want to change the roll-up door to swing doors, will save me alot of weight as well.John, where is the light switch for the wash bay? lol...cant find it...