I looked closely at the GV unit which seems to be the best thing out there as of yet. You can pick either over or underdrive for yer tranny and the OD uses a .78 ratio. Not bad! They are rated for 1200hp so they should be able to take a beating too! YOu can pick one up from Ebay for less and GV will actually trade even for the adapter which is quite cool, no warranty on the unit itself. The new price of $2500 is a little steep although I'd love to have one. Carl ----- Original Message ----- From: <mccollamge@xxxxxxxxxxxx> I think that it is unlikley that a Volvo O/D unit would fit , unless their supplier is 'Gear Vendors'... Gear Vendors makse a unit for our 727 transmissions, it replaces the tail shaft and doesn't affect the trans mount or drive shaft length.