[87BOSS351C]

I wouldn't run a Splitfire plug in ANYTHING! A buddy had a Buick Grand National that had those in it when he bought it. When he changed them five of the six had cracked in the v of the ground strap. Another buddy had them in a GM 2.5L 4cly. Thing always smelled like rotten eggs. Changed the plugs and the smell went away and again, three of the four were cracked. My cousin had some in a 2.9L v6 Ranger, again the ground straps cracked but this time one side broke off on one and went through the engine! Definatly not worth what they charge for em.