The only things I'd change are the carb and cam,easy high 11's. A Holley 650DP would be a good choice and if you can't go solid lifter cam,call Tim@Bulletracing cams for a good hyd lifter cam.I'd stay single pattern and 108-109lsa. Grind #CRA284/284 works very nice for a mild street/strip 360. Valve springs need 125lbs seat 300lbs open.