I really don't see anyway in the most extreme imagination that it would be legal in the current ruleset.

I do think trans and diff coolers should be allowed as the benefit of longevity far outweighs the potential for an incremental performance improvement (which exists but I believe deminimus in IT usage).

My trans and rear end were made for power far exceeding anything IT prep can deliver to it so I wouldn't use them myself.

When I do see something that I believe I should be able to do in IT but don't feel the rules allow me to do, I may or may not discuss it here but I can guarantee you I write the CRB and make the request. Your efforts would be best served requesting that trans and diff coolers be permitted in IT than being here justifying their usage knowing they aren't allowed.

crb [atsign] scca [dot] com