I will say the "gold" ATI I got late 80s early 90s that bolts to a hub I had to machine the hub down .120 to get the pulleys to line up and the front are larger to fit the washer for the crank bolt. It is on my 500 IA and still works fine.
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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
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