I just bought and installed some headers from O'rielly's for my 87' R10, since they never seem to have anything that fits a R10 but had some for a 86 C10 in stock I took those... Cheap ones $150 I also have a TBI 350 and there is a O2 on the drivers side... No place had a bung so we cut one of a stock Harley pipe and welded it in the drivers side header...
The air pump tubing or whatever that was running from the exhaust behind the motor was a PITA to remove but other then that it was easy.
Stock Harley pipes
Done...
