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Here is the 86 E350 MC and the 88 XJ booster mated together and installed in my 93 ZJ.
Here is the ZJ MC. Notice how the pushrod is part of the MC via some kind of
funky tube. It is part of the MC and not removable without a bunch of work.
Here is the ZJ booster. Notice how there is no pushrod sticking out the end. It is a funky setup with a short nub of a rod inside. The XJ booster mounts right up with no modification to the old ZJ spot. Even attached to the pedal exactly the same way.
Here is the XJ MC. It looks just like the E350 setup. However the mounting holes on the E350 need to be drilled out to 9/16 and a hair shaved off the outside of the ear.
Here are the SOA YJ lines I used to get a bunch more leangth. Even at full droop with no shocks they are WAY long.....

Here is the Part Number of the E350 MC. 25 bucks!

Here is the joining of the two front lined and it totally bypasses all the ABS
junk. I am not running a proportioning valve either since I want my brakes
working about 50/50 anyway.
bamblair@gci.net for any comments, questions or flames.