The other day I saw a vanagon with a nice hitch on it (parked in front of the Hales Brewery- y'all out there?) 
It had a sticker from Mann's welding.  It was a 2 inch receiver which bolted to the tow hooks but also had some frame work running back under the engine which bolted to some thing under there (engine carrier etc???)  Didn't roll around on the ground under someone else's bus very long :-0 ! 
So I called them up today and the fellow said $225 for the Custom job for Vanagons which he had done lots of apparently (And he said syncros were even easier) 
Know You Know What I Know !
Nat Seattle