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GTA Stadale,
I have to take issue with the nomenclature used to describe the heads in the early post. The GTA and GTAj heads were known at the time as twin plug heads. The twin spark nomenclature came along much later to describe, (and I supect differenciate from the earlier heads,) a redesigned head on the later fours.
Ken Geiger
Toronto
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Ken Geiger, Toronto
1965 GTA, RHD, Corsa, Trans/Am 66-72
1966 Sprint GT, B-Sedan in 70's
1970 Giulia Super (CDN Spec)
1976 1600 GTj (Italian Spec)
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