Home | Porting | Porting 2 | Flow Charts | Project car | Guest Book | Links Links Ford Muscle A GREAT! place for Ford tech talk, and other porting information. dscmotorsport A good source for cylender head castings. Stan Weiss A souece for cylender head flow data @28" of water RJ Tool RJ tool, has some of the best prices on carbide burrs. Standard Abrasives General cylender head porting guide.