Im back wanting to add t-tops to my gp. I have seen people replace the roof skin and i dont see.it being much more than that,anyone else done this before. I dont need a new roof its not rusted at all. i just really want t-tops ever sence i had a camaro with them. I know how to weld,degree in auto body. And to brace it all but when i start looking for a doner top how do i tell the difference of factory or this aftermarket that i hear you cant get the seal for?