GMSea, I don't know if the NV3500 has the normal GM block bolt pattern or not. I'm trying to find out if the NV4500's bellhousing has the standard pattern, I want to use one of those heavy-duty 5-speeds in my 1-ton panel. If I can do it without spending a fortune on adapters, I will be very happy. If anyone has this info, please let us know!
