i have all of my cummins conversion stuff laying around i can go with a getrag np205 and swap to the pass. side D60 outta the 89 dodge or i would prefer to use the nv4500 np241 and my ford D60 but have read that the 241 wont fit between the rails, but most that say that have no real word experience in putting one in. i left member Art a message in his profile because he was doing a cummins conversion, but he hasent been on in a while . 78 f250 4x4 supercab