factory amp is the power ...the radio will add no power.. only thing it may do is make it a little cleaner.
personaly before you did anything i would look @ what your looking to get out of the jeep and make a system to go w/ it. i hate all factory amplified systems. makes it harder to swap things. every time i get a new vehicle i replace everything.
factory systems only do so much.. doesnt matter if they are "higher" end ones. thats just another way to get more money out of the buyer, i know it sucks, can always get alot better system aftermarket than the "high end factory one" and in alot of cases for same money or less..
95 YJ, 4" suspension lift, 32's, 2.5l 4 cyl (350 built and waiting to be installed in spring, along with ford 8.8 rear end)