I'm going with the re 3.5" lift. I'm also looking at some sye kits. Do I have to have a new driveshaft with a sye kit or is my shaft ok?

 

New drive shaft, or new to you. If you have an auto you can reuse a front drive shaft from various zj and xj. Lots of info around on this.

 

At a min., you'll need to use a front Driveshaft out of an XJ. By installing a Slip Yoke Eliminator, the drive shaft has to be able to extend/compress. I went with Tatton, others use Tom Woods, and others just go to a pick & pull and grab a front DS off of an XJ.

My Tatton:

 

Alright, I'll prob just go pull front drive shaft out of an xj

 

As mentioned the length you need depends on transmission and axle. If you have a D35 behind and AX-15 an XJ front shaft isn't going to cut it lol

 

It's a stock 98 cherokee auto. It has 3" lift already

 

so with a stock 98 auto would a front driveshaft work?

 

Yes probably if you have a 4.0L + AW4. If you have a 2.5L + 32RH not sure.

 

yeah that's what I got. 98 4.0 auto 4wd