Checkout this cam kit at Comp Cams: COMP Cams: Xtreme Energy™ XR288HR: Cam & Kit
. Be sure and call them to make sure the push rods come with with this kit. Add a set of Scorpion Roller Rockers too. Check the stud size and make sure they are screw in for the rockers, if they are 3/8 I would have them changed to 7/16 studs. According to the dyno on Comp cams website, with heads ported, victor jr intake, 750 HP carb this cam will make about 484.7 HP at 6500rpms and 445.4 lbs. of torque at 5000 rpms. With heads as is and dual plane intake this same cam puts out 392.3 hp at 6000 and 401 lbs of torque at 4500 rpms. A hyd. flat tappet cam similar to yours made 383.8 hp at 5500 rpms and 415.3 lbs of torque at 4000 rpms.