3+ GM Motor Mount Adapter Plates
These adapter plates convert the "LS" type
square bolt pattern back to the 3 bolt Gen II and earlier engine
bolt pattern. Basically these allow you to bolt a Gen III
(LS1, 5.3L, 6.0L, etc.) and newer GM engine in place of an older
These put the back of the engine (where it
bolts to the transmission) in exactly the same place as stock so
it won't move your drivetrain.
GU32002 - $78/pair
category you would like more information on.