Are you sure they will let you run those SUs ?? If it was me i would at the least call and have a word with them before you go to any trouble.
My guess would be the tech guy at the track wont care if they are stock or not,, that acronym that track rules go by, don't like multiple carb setups at all,,, usually..
And if it was me i would sneak a long tail 4speed in there for strength, .
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