have endelbrock headers. they have the flange like the O.E. into the y pipe. the gasket on the drivers side was a donut so had it matched at advance auto seemed a bit small but it worked. on the passenger side is one with the donut and pipe with the top of the donut tapered. the flange is bent on the y pipe so i guess that is why they put that type in . seems to leak only when i accelerate hard while driving only. not toobad but annoying. to me. since i like my vehicles to run perfect. does any one know what gasket to use? or a part # ?? dont want to buy new set up untill i put a 350 in which may be a while. for now will do trial and error i guess. any help appreciated.

 

When we had this prob with my friends car, all we could do was go to the parts store with the gaskets and match them to new ones. As long as you put the new ones in right they should be fine.