I am about to put another set of gears in to try to get rid of the whine. I am adding a girdle this time around and having someone other than Ford do my gears. I was thinking of adding the Detroit True Trac while I had the rear end apart. Mods are in my sig. It currently makes 705/660. The car is an occasional driver and has 305/35/20 NT555r DRs. I take it to the track about 6-8 times a year and I'm thinking of putting some littles and bigs with some larger DRs in the future. I'm curious if the True Trac is a good idea for my setup. What are the downsides? How does the True Trac act on the street compared to the factory traction loc? Also should I do axles or should I be fine with the stock axles as long as I don't put slicks on the car?