Hello i have a 87’ 4.0l 2wd automatic longbed comanche and plan on doing a 4x4 swap and lift. It is currently running a d-35 in the rear. I have a donor d-30 and front drive shaft, aw4, and i believe the np231 with 2wd, 4 part time, 4 full time, N, and 4-lo (top to bottom). I also wanted to throw on a trussed donor 8.25 i have for the rear. I plan on running a rustys 4.5” spring pack lift and was wondering if i could get away with not having to mod my driveshaft. I know if I just did a 4x4 swap id have to shorten the rear driveshaft but if i lifted that much could i get away with keeping stock length and not using a sye kit or wedges, or a transmission drop kit. Any advice helps thanks a bunch!