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webfoot · 07-17-2015, 01:47 PM

Depending on what kind of heads you have you will need either a gasketed or tapered seat plug.

07-17-2015, 01:47 PM	#9
webfoot Registered User Join Date: Nov 2007 Location: Hermiston, OR Posts: 947	Re: Confusion on which plugs/wires/filter - 72 Sierra Grande 350 Depending on what kind of heads you have you will need either a gasketed or tapered seat plug. __________________ *Running in place gets you nowhere fast.* -me 1968 GTO 4-spd covnvertible 1970 K-20 4-speed, factory AC.