[Snakeman]

must have impacted a piston at high rpm?

i don't know how else it could have happened, but while racing a firehawk ws6 and a z28 with paper dealer plants (and heads, she said. prolly nitrous, too.) power suddenly got very uneven, one cylinder was misfiring. i figured it was a good enough time to check the plugs and pray that i didn't have a blown head gasket. now i don't know. If the piston cracked, with my supercharged engine, it could be catastrophic if it failed under full load...

any ideas?

1998 supercharged cobra

the plugs aren't what i've seen recommended here, either.
they are motorcraft platinum awsf 32e

is that the stock plug?

thanks!