how much do you guy's think that gt40x aluminum heads brand new never used with brand new ferrera race valves 6000 series 1.94/1.54 with rev 600 lift springs and crane cam gold series rockers 1.6 ratio 7/16 stud mounts. what do you think this is worth ? everything is brand new exept the rockers ?but they are in great working shape. thanks guy's
