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Originally Posted by AndyLong
As far as I know all 72 455-HO had unitized ign only, good luck locating these parts.
Andy
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The 1972 455 HO Formulas had the unitized ignition as a mandatory option. The Trans Ams came standard with the #26 point dist and the unitized model was optional. My car has the WD coded block with the point distributor. The WM came with the unitized. Similar with the YB=points and YE=unitized. The PHS sheet will tell you if your car had it, if you dont have the buildsheet.