I recently bought my tanabe exhaust stillen test pipes and dc ceramic headers , so i installed my exhaust first then the headers and finaly when i was about to install the test pipes they dont fit!! they fit in the end where they bond with the headers but they dont fit at the end of my tanabe exhaust stillen pipes are much larger and the bolts dont fit what should i do besides the stillen test pipes have a larger diameter hole than the tanabe exhaust?? :banghead: