its A heavier hull 75 18' challenger fresh berk pump, Diverter stuffer with a bronze B. All new boat really. All new guages. Mtr is a mild 454. flat tops its maybe 10 1/2.1 cams like 580ish lift, tunnelram with dual edlebrock 500's. motor is FRESH. msd dist with the msd6 box. Pulls real good out of the hole mid seems to stop at 3300 just as its starting to go.... At first I thought the tach was wrong still kind of do Its no race motor but seems a bit weak to me. lean timing hits the brakes that much?