So I just installed my Mac 1 3/4" long tubes in my car and then when I get to the X-pipe I realize the one I have does not fit right. Of course I bought it off of E-bay for $65 new, but it was a home made , great quality peice but just does not match up/Align to the MAC collectors. Damn! What are you other guys using as far as an X-pipe, Should I get the MAC Prochamber to assure proper fitment and alignment? Please help