Are there any of the .045 BB ROL gaskets to be found anywhere?

I need to pull a head off to have it flowed and Im worried I wont find a gasket to put back on the motor.

Any leads greatly appreciated!!

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.