[Big-Foot]

having done more than just a few of these cars I find over an Inch in contour difference excessive - matter of fact even in the worst of the glass from FFR I've had 3/8 that I had to work out of it...

I'd check in at ffcobra.com as Bill suggested and I would also place a call to FFR.. You are aware that FFR's have a different contour trunk from any other currently available Cobra Replica. It's know as the "Perky Butt" by most...