My wrecker told me the VT diff wont fit in a VN-VS someone else said they ran a VT diff in a VP. What I do know is that the VLT-VN-VS run the same 7.8 inch diff, the gen 3 and super 6 VT- uses th 8 inch version and the VT- V6 uses a smaller 7.6 inch center and I'm still not sure what fits in what