318 head porting for the average joe

Even cooler vale seat tool being able to cut those DEEP entry angles!
My B&D struggles to do them at that size...

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Yeah it is. I think it's a 70 or 75. A lot of people out there will frown upon or look down on someone using stones, but I like them. As long as they're dressed properly and you know what'd goin on they can give results equal to some of the best cutters out there. The industry used stones for a very long time.