What about these "racing style" fuels doors? I think they are mainly found in billet aluminum(?) They were standard issue on the Bullet Mustang a few years back, but how are they as an after market installation on, say, the '99 and newer Cobras? Have any of you out there done this? If so, I'd like to see a pic, if possible, just to see how they look on the Cobra. Also, how was the installation process itself? Easy or difficult?