Sorry I had one image on there wrong. I'm needing help with the reading of the spark end not theletters or numbers. But to answer your question in case I'm misunderstanding. It's a pump gas big block with eddy heads.
RC12YC. Yea I saw the cracked insulator on the one the other one wasn't. Picking up a set tomorrow and will see what the others look like. Thinking I need to back the timing up a bit from the looks of the heat on the side electrode.
