Just a note on the Mastertop install - i got the replacement fabric version where you have to re-use 1 part. The twill seems nicer than the typical plastic tops. Kinda curious if the Bestop Twill is better, but not available for a LJ anyway.
The website instructions say you have to use a few parts, but is wrong. You use the windshield header, door surrounds and tailgate bar from the existing soft top. You add 2 1/4" holes to the surrounds for different brackets and the rest is pretty standard.
It does have the front convertible feature, but I do not plan to use it, so not comments from me.