Come to think of it, I have not seen any professional NHRA car EVER run indipendant. With the extra complexity of CV's and their lack of strength/width needed, the setup would not work. Drag cars use solid rear axles to eliminate the weaknesses of indipendant rear setup under high torque. The strongest CV axle made is never going to be as strong as a solid piece of hardened chrome moly steel. That's fact.

I couldn't see one of those rail cars with 4000+hp with an independant rear. It would turn it into a pretzel at idle.

You still haven't recognized the ae86's solid rear axle and it's ability to drift still. It may not be "ideal" in your world, but fuck...the cars do quite well regardless.