Thanks rumblefish360...yeah, I found porting heads to be one of the more rewarding undertakings...but you are certainly right on the money with the time estimate...it probably took me a good 60 hrs/head and this is already having some experience with using various bits, shaping ports, etc, etc....it really is some serious "elbow grease"...and as someone told me before: "...once you try the serious style porting on your own you will understand why the pro head-porting effort costs the money it does...", no argument there!!!