Originally Posted by Jeepsr4me
get the spacers from fat bob on ebay or use a Prime account on amazon. then go to a local 4x4 shop that does lifts for the jeep dealer ships. they will have piles of new shocks from the JKs. they will be a few inches longer than your stock junk and work perfect. Most times they will GIVE them to ya.
I did a write up years ago on how to use the springs from a JK also.
front JK shocks will work well for a 2" BB with 1" bumpstop extension. The rear's are too long for a TJ BB however, they require 2.5" bumpstop extension. Normally you'd run 2" bumpstop extensions with 2" BB spacers. The JK shocks also don't have very much travel, and there are plenty of viable TJ shocks out there to use with a BB.
OP, the BB spacers themselves are all basically the same....aside from shocks, and the incompleteness of various "kits".