RE: FG 4x4
I thought of the same thing but you could probably buy a MCD for around the same price stick your motor and engine in it and have a brand new truck. Just a thought.
[link]http://cgi.ebay.com/1-5-Scale-4X4-MCD-Monster-Truck-FG-zenoah-baja_W0QQitemZ190027645805QQihZ009QQcategoryZ44029 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem[/link] - Not that this is the best price but it is close.
Oh and I think its shaft driven.