Ok,I have read a couple post about swapping a 2.6 for a 4m40. But I've yet to find someone that actually did it. The post usually ends up going somewhere else. I just bought a 1988 ram50 4x4 2.6 w/auto. On Ebay there are a couple 4m40 for sale,also 4d34 as well. Anyone ever seen one,here one or know if it has been done. Oh yeah,motor is toast and already pulled out for me.