I recently put a RB header, RB midpipe and GWR Roadster Sport II muffler on my car. During the removal of the stock California emissions exhaust manifold (man its a heavy SOB) one of the studs came out with the nut. I attempted to just reinstall it like it was a bolt as I did not have access to a new stud and nut at the time. Unfortunately I mucked up the first few threads. They're just kind roughed up. In conclusion I would like to clean up the threads for the installation of a new stud. What is the thread pitch of the manifold studs? Sorry if this has been asked before. My quick search of the forum and Google didn't turn up results.