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Champion H8C. Should be easy to get. Oreilly Auto Parts stocks them. That is what I run in Iron head big blocks. Got them in the Lebaron right now with 915 heads. Dan




I went to all the local parts stores no one keeps this plug either. They told me that c this plug crosses over to a autolite 216???? Dan is your motor n/a or a power adder? will these work and what about a little 175 shot on it???