The D-761 hanger can replace the D-755-E hanger on all e-body applications where larger tailpipes are being used. Simply install the D-761 with the appropriate sized muffler clamp. The D-761 bolts directly to the factory floor-pan bracket which should already exist on the car. if not -new stainless steel universal floor pan brackets # ACC-4001 can be ordered as well. Takes (2)per car. ) Does not come with mounting hardware.