If I have a 2.5 RK Flex lift, can I just swap out the 2.5" coils for their 3.5" coils. Is there anything else I'd need to do? Once the 35's wear out I plan to go 37s. Regear and new driveshafts will also happen before the 37s. Any help is appreciated.
I think you'll find the answer is, "Yes, but..." Your driveshaft angle is going to be affected, particularly in the front. In back, the axle is going to move relatively forward, and slightly to the passenger's side.
BTW, you might want to call them rather than emailing. This is a busy time of year, and phones sound more insistent than emails.
Yes it'll work just fine. You should check your caster afterwards, might need to tweak the length of the arms. Also you might need to recenter the axle with the trackbar.
Ya, now you're getting into the dreaded "castor" game. I ended up having to run 8 adjustable control arms, among other things.
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