I read through every comment on this thread but still have a few questions I didn't see mentioned. I'm planning on SYE before I do a lift. My Jeep is a 98' with D35 rear axle (w/ abs (read about this changing transfercase output spline count)), AW4 trans, and NP231. With it being a 98' it has a w/electronic speedometer, and will need the SYE with the sensor right? Can I do short SYE and use a front auto drive shaft (91+) while at stock height? That would mean I want the 1310 u-joint style to do this? I'm kind of lost when they mention the spline count with the output shaft on the transfer case. I read about a "proven 32 spline SYE", although I've also read about 21, 23, and 27 spline transfer cases. Should I bother replacing the chain if everything looks to be in great shape? When is the wide chain kit necessary? I'm thinking about just picking up a used transfer case and doing a rebuild so it's a quick swap. However I wasn't sure if I needed to get one for 29 spline axle jeep, or do I need to know what spline count the output shaft is on the transfercase is?
JBconversions seem to be the best SYE on the market. Is this without a doubt the best option? Or should I just save a little bit of money and get the short IRO one? I'm planing on a 4.5" lift in the future with 32x11.5", but I want to leave room to go bigger in the future.