Sweet! So do I get the master cylinder as well?

Get booster, nuts from the mounting studs, master cylinder, and the lines coming out of the master cylinder.

Thanks, cruiser!

Because I have disks in the rear, could I just use the prop valve from the wj?
Assuming they have disks in the rear as well.

I don't think they have a prop valve. All ABS I'm thinking.

So, you can try it as it is or go to the JY and get the "guts" out of a ZJ prop valve 94 to 98 and swap them with teh "guts" of your prop valve.

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Okay thanks

That's what I did when I put rear discs on my wife's 88.
It is getting a WJ booster real soon. Picked it up today.

Cool deal, I can't wait to actually be able to stop my 35s lol

Having done rear discs on the XJ, and then just the booster on the MJ, I'll have to say the booster is by far the bigger improvement.

Together on the same rig, I can't wait.

That's good news. I like the disks and i bet ill love the booster.
Do newer xjs(97+) have duel piston calipers in the front? I put a 99 Dana 30 on my 88 and it now stops even better

Not sure, but I doubt it.

Hmmm, could have been just cause their 11 years newer lol

Got the WJ booster in the 88 yesterday. Couple of tihings compared to the 95 to 96 swap.

The firewall flange must be cut and/or bent with the WJ.

The washer bottle doesn't need to be moved with the WJ.

The WJ master cylinder lines are easier to work with because they're flexible.

The stud size for mounting the booster is a little smaller on the WJ booster. Much easier to get installed vs the 95 to 96.

I've only driven around the yard so far but definitely an improvement.

Good to know! Thanks for the update.
Any troubles with the brake light switch or anything? I think our renix jeeps have a different switch then the newer ones.

Yes. You must use both master cylinder and booster as a unit.

The booster rod needs to be drilled out to accept our bushing, and have a flat ground on it like our old boosters had.