Just a tip on the thread locker for that application. Guess what you use to get thread locking compounds to release? You guessed it, heat! So Loctite on an exhaust bolt is pretty much useless. On my header, I used stainless steel bolts, nuts and lock washers (you could also use crimped lock nuts) and it stays nice and tight. I use anti-sieze compound on the threads to prevent galling.