Brake Booster to Firewall Gasket (1976)

[Mako21]

I found the correct Master cylinder to Brake booster gasket, However
having a hard time locating to buy the Booster to Firewall gasket. Any ideas where I could buy one? Napa, O'reily, Pep boys and internet search doesn't find what I need. It only yields MC to Booster gaskets.

The FSM clearly indicates there is a gasket there at the firewall. My worry would be sucking in ambient air into the booster and fudging things up internally if I don't use one. How critical is this gasket? Could I just make one myself with gasket template?

My car is a 1976 Dart 225/904 Factory Power Brakes
Thanks.

 

[S'cuder]

Included in this $30 kit. You might find it singly somewhere else, or make your own.
Mopar A body 75-76 BASIC NON AC Firewall Gasket Set

 

[CFD244]

Try making it out of a piece of house sill gasket if you can't find one.

 

[Musclesigns]

Reach out directly to Jim at DMT. I’m sure he’ll sell you the individual gasket out of that kit. He’s great to deal with.

 

[Mako21]

Thanks, that’s exactly what I need. I’ll follow up and reach out to Detroit Muscle.