One of the most popular tops is a "Replace-A-Top" from Bestop. That's probably what you're seeing when it says that you need Factory hardware.
But it's not your only choice.
You can buy a Supertop, which is very much like the factory top, but comes with its own hardware.
You can buy a Supertop Replacement Skin, which all new fabric and windows, IF
the aftermarket hardware you have is a Bestop Supertop (it probably is).
You can buy a totally different top, like a Trektop.
And those are just the options from Bestop. I hear rumors that there are other companies out there selling tops. :-)
You can go to our FAQ page
to see if you can identify the hardware you have now. If it is Bestop stuff, then you can contact our customer service dept to find out exactly what your options are.