I swapped a 518 in place of my 435. It was in a 1985 Crew cab 4x4. Had to modify the tranny mount, shorten rear driveshaft and lengthen front drive shaft. I used a cable operated shifter on mine. no clearance issues at all. other than modifying a factory transmission mount from a 97 model truck, it was all bolt in


1985 Crew Cab W250 4x4 - daily driver, 5.9 magnum, carbed and distributor, A-518 and NP205
2002 3500 extended cab, 4x4, Cummins and 6 speed
1997 Ram 2500 5.9 with 35 Boggers - Mud Racer
1993 Dakota 4x4, Dana 60's front and rear - work in progress
1992 Dakota 2wd short bed, awaiting 440 swap