The FP 8519 is NOT a performance intended head gasket... it simply has the additional spark plug stem holes.. as used on the common motorhome engines.

Mopar Mitch "Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers! Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!