Car is a street car that goes to the track, and looking to get rid of some weight. I have electric open exhaust cutouts at the bottom of the downpipes, and basically run it open at the track, or when the car gets run hard. Tee'd in on downpipes is the tie in for the stock exhaust, and I have 2.5" stainless pipes that end under the driver/passenger seats. I'd like to go to 2.5" aluminum from this point back, including the over the axle tailpipes. Is this a good idea, or a headache waiting to happen? Thanks!