I am dynoing Tuesday out of state and came to the realization that I only have 1 Header gasket. I run the FAB SHOP dragster headers and they make their own gaskets to fit and they are big over 2 inches square port size. Anybody got 1 Fab Shop gasket or a set of header gaskets that big they could overnite on monday. I looked for superformance on here but couldn't find any info. You can call me direct at 918-671-4559. Thanks for any help

Dont bother with them , I use the high temp silicone on my turbo car and the seal up just fine.

I use only silicone myself on my B1MC's.

ditto
i only used gasket on my headers---till i got my B1MC and the guy i got it from showed me "gutter silicone"-clear---been useing it for 2 years now

Sillicon on both my B1-TS engines

silicone here

but the real track is split the flanges between every cylinder.
99% of leaks can be stopped that way because if there's any of the flange that is warped it will become less to sealwill cure the

Silicon used across the pond as well

As Fred said, split flanges help to reduce blow by

For my B1, I had two outer flanges & shared middle port flange, with the slip on collector made installation & removal easier.

My Hemi has flange for each cylinder, a lot more clamping bolts, again with slip joint.