Ive finally decided i want a rough country 6" lift kit BUT, will i need to lengthen or replace my front drive shaft? and will it hit the cross member? i figured for the rear drive shaft id just get a extension block about 0.5 or 0.75" and put some degree shims on the axle just to be on the safe side. ive heard of people getting vibrations at higher speed and i do a lot of highway driving so any help or advise will be greatly appriciated

 

im not sure on the front but the rear its a good idea to shim it i chewed alot of univerals in my dodge till i shimmed the rear

 

drive-shaft lengths stock are fine up to 6" of lift and mild off road use, if i remember correctly, all you really have to do is cut a small piece off your transmission cross-member to keep your drive-shaft from rubbing under full droop...

ive been running a 5 inch block in my rear for 4 years and 40,000 miles with no issues other than axle wrap... originally ran a 6 inch rough country kit before my SAS, pretty easy and straightforward, although my truck was 2wd, all the brackets and everything is the same...

 

Id hate to cut anything but it seems like im going to have to. Im guessing all id have to do is notch a v shape out in the cross member?

 

the amount you have to cut may not be much, make a bunch of small cuts, instead of one big one... ill be making my own crossmember when it comes time to put the trans and t-case in... ill also be running custom driveshafts for the long travel that im running,,,