[NAPCO ken]

I am running 8" lift on my '90 Suburban, also with 3/4 ton axles (actually since then, I've installed a 1 ton Dana 60 front end). You will need longer brake lines. The exhaust crossover that goes underneath the front driveshaft will have to be modified to allow clearance for the driveshaft. The rear driveshaft I did not modify, except to get a conversion u-joint to go the the 14 bolt rear end. Since I installed the Dana 60 front end, I did noot find it necessary to lengthen the front driveshaft, as the 60s pinion snout sticks out a bit further than it's 3/4 ton counterpart. Crossover steering is the hot ticket. I have it on two of my vehicles and cannot imagine steering a lifted truck without it! Good luck.