Looking for info on 2406782 rods

My memory is a little (or maybe a lot) fuzzy. Didn’t DC or MP market a premium set of those rods for high rpm drag race usage? Wondering if that may be a set. Also, a question for nm9stheham. if you ran the aforementioned set up in a 360, would it be better to drill or to turn down the outside of the counter weight to bring the balance back in?