You were asking earlier about the exhaust ...
Not sure if your need the flapper or the flange but SkiDim has them both.
Also, you said you might need to do some glass work on the panels under the dash -- are they cracked or what? If so, just a couple layers of fibreglass cloth will do the trick but don't make them too rigid as they need to be able to flex a bit to be installed as I recall.
2005 X2, Viper Red, MCX, OJ TZ-X5 prop, PPass, rear 750 sacs, KGB, IBS, Bennett Wake Plate, custom wake shaper
(previous) 2001 X5, 1991 TriStar 190