Which heads to run on 340

Do you know where hes located at by any chance? Im in Missouri kinda by St. Louis and prefer not to ship the\m somewhere. I will have to check my small block book but can i put 2.08 intake valves in J heads? Think i can but would also like to open the exhaust up to does anyone know if i could run 2.02 intake and 1.65 exhaust like the magnum heads? Just a thought.