I installed the rear diffusers on the rescue roadster today . . .
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Nice quality / Good fit / Easy install Overall I am VERY satisfied. IMHO it fills in those gaps in the rear end where something was obviously missing.
My only issue is that the plastic push pins provided have a "screw in" type pin with a Phillips head. The slots in the head are not deep enough for proper grip of the Phillips head screw driver and the head strips out very easily. Tried using a slot head screwdriver and the plastic screw head stripped out with that too. I substituted stainless steel self tapping Phillips head screws and that worked perfectly (but now I will probably need to "black out" those stainless steel screw heads). My camera lens does NOT permit me to get clear close up photos but I think you'll get the idea . . .
I would recommend these German made diffusers for anyone wanting to install rear diffusers on their Crossfire . . .