weiand 7512

I know this is an old thread, but I have one of these intakes that I am planning on using on my build.
Does anyone have the original specs on these things, like RPM range, etc?
I've got one laying around unused and old enough it doesn't have the EGR stuff on it.

Seems like there I saw an online magazine article where one of the RoadKill guys did a shoot out with that model in it, but might have gone down the memory hole.