B series heads?

452 heads have somewhat of a hardened seat. Don't stress. Figure out your cylinder head budget. See if the machine shop can do a little bowl blend for you and a quality valve job. If you need quides the price will climb. You will probably be replacing the springs . If you need valves.....now you're starting to approach some cheap aluminum heads which really should be brought to a machine shop, disassembled and inspected. More money.....what is the goal? Street car, build a 375 hp iron job and spend your cylinder head money on the chassis. Get some better tires,brakes and exhaust. No point in spending money on heads to make 600 hp when you will be happy with 400!