I'm not sure that you can tell it's "mint" unless of course it's still on the donor car. Otherwise, you risk ending up with a top and frame that looks great but, in reality is somehow bent or torqued in such a manner as to make a leak-free fit on the GF's car impossible. And when mama's not happy, ain't NOBODY happy! In theory, it's a sound idea (you still have to deal with the issue of the rear cable, though)....just make sure you get what you bargained for.
DW



