I found a stock ‘95 YJ diaphragm. That took some calling around. Reason I went that way instead of one the aftermarket jobbies is, if I blow out a master cylinder, I can go to any parts store and get a master cylinder replacement. The master cylinder is the same as a TJ. I like to stay factory design whenever I can.
TJ booster can work but you have to cut the shaft to make it shorter. However, as I’m typing this, I wonder if you could space the booster off the firewall a little to make up for it.
Single best upgrade I’ve done to date.