Aluminum front component diff bulkhead block meal enhance the front differential height and improves the driveshaft views, creating more traction on component exit while increasing mid part rotation. The improved driveshaft positioning in addition helps expand the clear answer periods of this driveshafts CV bones and pins, as well as the diff outdrives. Machined from Swiss 7075 T6 aluminum and black colored coated. Fits both GTX and GTXE.