4. Here's where the old "measure twice, cut once" deal comes into play.Our H-pipe was temporarily hung and the muffler was positioned with ajackstand. The clearance of the case, curve of the inlet pipes, andposition of the tailpipe outlets make its proper location fairlyobvious. Next, the pipes that connect the muffler to the H-pipe weretest-fit, revealing that the H must move toward the engine by shorteningthe head pipes leading to the Pypes downtubes. We held off on makingthose cuts until everything had been trial-fit.