I have a 4.5" long arm lift on my 99xj, I did the sye and have a tom woods custom shaft in the rear, I recently purchased the jks acos (adjustable coil spacers) and was thinking of getting 1" extended shackles to bump up to 5.5 inches. Will this affect my driveshaft going up that extra inch?

 

yes it will. but not enough that you will need a new one. possibly a small pinion adjustment if any.

 

Ok that's what I was hoping, eventually I want to get up to 6.5 when my 33s go bald and jump to 35s

 

Any recommendation on shackles? Jks, tereflex revolvers, shackle relocation?

 

Check out sliders. Hang on I'll grab a link..

http://www.liquidironindustries.com/...roductid=18222

 

This list is more along the lines of what your asking.. #1 pick is the boomerangs.. Though.. The revolvers get a lot of online praise..

http://www.quadratec.com/products/pr...es&c=125&srt=h