Got mine from Smokey's Speed Shop in Oceanside California. I think they were Mr. Gasket Brand. Same as a SBC Crank Key! Brian at IMM Engines taught me that one.
2* & 4* The 2* key came in at 3.5* kind of sloppy fitting. The 4* Key Came in at 5* and fit really snug, just to let you know in advance to check it!
They will ship straight to your door. I was close enough to drive.
Smokey's Auto Parts Speed
1602 South Coast Highway
Oceanside, CA 92054-5318
(760) 433-9770