Bestop has the best full soft and bikini tops that i know of out there in the market when it comes to their sailcloth material. They're also the manufacturer of the Jeeps factory soft tops. So as far as fitment is concerned, i would trust their product over the other competitors. The one's that say that IF you have a soft top on your jeep , your not required to purchase the header, this means you have to remove the factory header off your existing soft top and use it on the bikini top. Be aware of the kits you may need for the installation of the bikini. If i remember correctly, there are 2 brackets required on each end of the header tubes that originally attached to the main frame of the full soft top. These brackets will prevent the header from tilting back when you install it without the frame.