Also, to those that are wondering why on the intake side of the port entrance, why I suggested just a straight file between the two intake ports to smooth the casting at the entrance and recommended not thinning down that wall is simple. I like a good surface to be sure of no gasket leaks.
...i have seen some stock heads with really not much between those intake ports.I wonder how much it would matter if there was some leaking there.Wouldn't the majority still be coming from it's own port?