Yes this is a stock 245 cnc’d head. The marks you are looking at are probably the few that weren’t touched during the process. I was kinda shocked at how well these things flowed. Would I do more work to it if they were mine? Yes. Would I buy a set? Yes, if I could get heads with untouched exhaust ports. In my eyes the amount of metal they took out I couldn’t “fix” what I feel is done wrong and the airspeed and flow shows me that.
