ok so this past weekend i got my greddy header and apex ws exhaust on, HOWEVER i wanted to make or buy a test pipe to do a cat delete but all the test pipes i see online for preludes are perfectly straight AND my header does not line up straight with exhaust? i have all the stock hangers in their proper location and the exhaust sits straight in the heat shield area. the header (greddy) seems to be seated right, besides for the fact that the mounting plate that should bolt right above the oil pan is not connected (for some reason there is a good distance between the plate and holes, idk? but back to the test pipe question for those of you who have them, are yours straight? why are things not lined up?