I like many others are contemplating a diesel conversion. I've looked around for salvage Cummins engines and ususally see engines listed as being mated to an automatic transmission. Questions: How would you go about mating it to a manual tranny such as an NV4500? Would I be better off starting out with an engine that was mated to a tranny such as a 5-speed Gertag even if I wanted to swap it out for an NV4500? How involved and how expensive would it be to do it?