My ebay buy..omg

A56 said

I believe graphics and the scoops. Cuda pkg cars had hd sway bar,shocks, 14 x 5.5 wheels but still 5 on 4 snap. All other options were the same except for the 440 cuda which was only available with the cuda package and no convertible cuda pkg cars.

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so ,is boils down to the a56 code,340 ,383,scoops,cuda graphics and the wild card 440 M code,the S came with 5.5 red lines,hd sway bar,shocks, 340/ 383,S badges and tail panel//besides the 440 that was a hell of a sales pitch on a short name "CUDA" and the rest is history !