FMF powercore IV or WB Randy Hawkins replica?

If I buy the FMF silencer will the WB tapered head pipe fit it? I want the most power I can get. Sound isn't THAT much of importance. I run the stock exhaust without the baffle and its not TOO bad.

The FMF PC IV-2 tail section has the input pipe sized exactly the same ID as the stock headpipe OD and their Power Bomb header has the same OD. The WB tapered head pipe is much larger at the silencer junction and WILL NOT FIT. The PowerBomb header is an excellent looking and well built piece of hardware. I will be testing it tomarrow.


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