Is anyone running a Mac Prochamber

[jimjeffords]

I started to install mine this weekend and i bought it used and it doesnt fit right. I think this must be for mid length or long tubes. The chamber and pipes hit the trans crossmember. If we slide it back to where the pipes fit in the curves of the crossmember it is about a foot away from the stick manifolds. Where does the prochamber normally sit? Behind the cross member?

Thanks
Jim