Hey guys i just ordered a rough country 4.5 inch long arm kit..should be here ina couple days. I dont have a slip yoke eliminator yet so im definately using some shims.. my question though is what size..ive looked on rustys and they only have 3 degree or 6 degree. I was going to get the 6 degree beccause i know with the rough country leaf pack i will need the relocation bracket and will be sitting closer to 6 inches..also is there anything else i should look into for the install? any helps appreciated thanks in advance.

Without an SYE you shouldn't need shims. You only change the pinion angle to point at the TC when an SYE is in use, otherwise the pinion angle should remain the same, almost parallel with the ground, +/- a few degrees should be fine.

alot of rc springs have a shim on them allready