71 Dart / 5.9 Magnum / Procharger

If I read it correctly, you had EQ heads and it did not burn the spark plug electrodes off. The piston looks to be in tact too, although I'd be curious to know if the ring lands held up. I wonder if the thin deck of the factory block, combined with small block Mopar only having four head bolts around each cylinder, simply allowed it to flex there and the gasket was doomed. No real fault of the gasket itself.
Very cool what you've been able to do with it up this point. Good luck with new combination. Looking forward to seeing updates.