So i finally got my 360 dart running and everything is working perfectly, the car is awesome, except these damn headers will not seal... i have taken it to two different exhaust shops, one that switched my cheesy bolts to studs and better gaskets and they still leak LOUDLY, like i can hear it over dumped spintech pro-street mufflers... thats bad...

both places told me the flanges are just too weak to provide any flat mating surface... looked it up on summits site and they have a 1/4" flange vs. 5/16" for everyone else...

the question is... is there anyway to get these hedmans to seal up without cutting off this flange and welding on a newer thicker one, or switching headers?... if there isnt, then ill end up biting the bullet and switching, but if anyone has any tips or tricks with these headers in particular, let me know!... thanks...