could anyone help me find the right size for header gasket and the gasket down at mid pipe to s-pipe i don't know the exact i feel like my exhaust is leaking

 

I have mmw header and s-pipe also and i had a small leak between mid pipe and s-pipe. I took it back apart and took the gasket to advance auto they had a couple that were close to mine, so i put back together and still had a small leak. make a long story short i bought this stuff called Thermosteel at same store put it around the flanges where the pipes come togrther and no more leak.

I still hear the leaking exhaust though, I believe that the sound i am hearing is the exhaust moving through the header (because there is no longer a catalitic converter). At WOT i dont hear the leaking sound, only when im a low rpms because of the slower flow.

I hope this helps ya figure out the problem MY GRAMMER SUCKS!!!!!!!!

 

Well i dont want to ressurect old threads but... I have this same exact sound, goes away at full throttle or high rpms.. sounds like little metal peices rattling right? Any1 else have this? An easy answer would be to just lift the car and check but i wont be able to do that till this weekend.