i have a 428 cobra jet but have never seen a regular 428. i know that the cobra jet has larger valves and ports in the heads and in the intake. There are also other differences but the easist way for to tell would be to check the numbers then u really know for sure.
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69 428 cobra jet:bored .030, forged aluminum pistons, C & A rings, Engle cam, Edelbrock intake, 750 cmf carb, Hooker headers, March pullies, all ignition componets MSD, Holley 7psi fuel pump, Art Carr C-6, TCI torque converter, 4:30 gears, H pipe, subframe connectors, lift bars.
I aso have a stock 96 GT.
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