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I have a 72 duster with a 416 in it,904 ,4900 convertor,8-3/4 410gears.Rhs heads, vic jr,600 lift cam.11.4 comp.950 Pro carb.TTi 1 5/8-1 3/4 step headers.Car weighs 3200 with Driver


Plan on changing headers to 1-7/8 tubular automotive headers that I already have.Wondering what the car will do pick up or slow down.Car runs 11.00@120 and 149 60 ft.