SS/XA was a very strange class UNLIMITED ENGINE MODIFICATIONS, 600 cfm Holley, 9" tire and an auto trans.
Way too much power for the tires of the day and hard to get replacement parts after the Indy Lights started using the same engine from Buick.
Diamond & Beeler also ran SS/XA with an Olds Cutlass Supreme with the Buick powerplant.
Bob
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Bob Mulry 7516 STK
A & M Motorsports
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