If there is any pitting at all you will be money ahead fiinding a new set of pipes. Chrome is not cheap, gets worse if there is pitting. I make my own exhaust all the time. Used to make drag pipes but they hurt performance unless you make them long, so no longer use them, if you like the look that fine but 4into1 is the best for these motors and sound better then the 4 short straight pipes.. Cycle x used to be known for their exhaust but dont make them anymore, might be worth giving them a call see if they have some leftovers in stock though.