I would think the driveshaft will need to be shortened, since the 44 is about 1 inch longer, and there may be some bolt hole modifications necessary.. if you can t find a 44 batwing, I m told there is an adapter plate to use with the 36 batwing .. the Dana 44 is certainly stronger, but do not think that it is indestructible..I have a Duntov Built Dana 44 in my C3 behind a 525HP /383., 700r4...4 years now and its still together, but I do not run slicks, ever!.. good luck.