I've got the mac prochamber on a 85 i'm running ford motorsport shorties where the pro chamber hooks to the headers is leaking on both sides. The headers have the donut in them am i suppose to have some gaskets in between them when i had my straight pipe i used no gasket and it didn't leak. If i do need some gaskets any ideas on what would work best. Thanks

 

the headers shouldn't require a gasket there even when it had stock headers, it should be a ball and socket type seal

 

the ball is what I was calling a donut I guess. I had enough of working on it i'm thinking of bringing to a shop and let someone that's knows more than me do it, then again might think different tomorrow. My problem must be not getting it line up perfect. The straight pipes i had slipped over the ball with no trouble.

 

I'd say tighten down the flange bolts as tight as you can then