I've driven a good friends fairly powerful GST(built motor, FP Red, 30psi on pump gas) with a TRE build trans with a Wavetrac LSD, it was quite different from my days as a fwd. Car pulled nice and straight, didn't notice any torque steer really.

He went with the Wavetrac as I believe it was TRE that told him he wouldn't break it where as they wouldn't guarantee his trans work with a Quaife in it.

He's been abusing his car for the last 3-4 years with this LSD and hasn't had a single issue with it. I'd definitely check it out.