I took the heads off last winter. I ported them myself and had a 3 angle valve job done on the stock valves. The valves weren't backcut. The engine and everthing on it(assuming) had about 98,000 miles on it. I'm gonna try and get another head, port it and get another 3 angle valve job. I'm gonna replace all the valves on that head with new stock valves .

Does anyone think I shoud replace all the valves?