If you are an industrious man, and since you own a GVR4 and have owned DSMs I know that you are, I could sell you a nearly perfect Evo 8 or 10 OEM FMIC and you could make or have made the necessary piping. It is a HUGE improvement over the original GVR4 FMIC. If you do want an OEM FMIC I have 2 of them also but not all the soft hoses that would be needed to install it.
Josh