D dannydoo Member Sep 10, 2004 195 0 17 Oct 3, 2004 #1 Oct 3, 2004 #1 GT FIZEAA21WCP?? ARE THESE THE EXPLORER HEADS? ANY HELP IS HOT
bjl95mustang Founding Member Jan 18, 2000 1,495 0 36 Austin,TX Oct 4, 2004 #2 Oct 4, 2004 #2 You will see gt40 or gt40p on the castings by the spark plugs.