Here is an idea you might find interesting. It is off topic, but applicable to what you are thinking. As most of you know I have been helping a few folks with Ford Y block heads and intakes, and there is a fairly new aluminum head cast by Edelbrock for John Mummert, in CA. He has updated the head and intake, so that a fairly stockish 292/312 Y block can make close to 400 hp on pump gas, and idle like a stocker. I have ported several sets of those heads and even had one set make 585hp on a stroker Y, and just last year another set for an EMC entry made 561hp on 362 cubic inches. We tried many intakes that I had ported to flow various cfm average, and the heads flowed around 282/202 upper, 272/202 lower ports. The heads were neither the best or worst, just a good set of heads, but John Mummert has come up with a radically changed head that is angle milled .125" for a smaller chamber and valves moved closer to centerline of bore, moved the exhaust valve inboard and installed a smaller 1.510" valve, moved the spark plug and tapped it for a 10mm sparkplug, and the real neat part was moving the rocker stands to achieve a 1.7 rocker ratio. We bolted a pair of the CNC'd heads on the same engine, and immediately picked up 21 hp. Whether it was a combination of higher compression, and more rocker ratio, or moved spark plug, it flat worked! They went on to produce 594 hp @ 6800 rpm, and after the EMC was over, made a few tweaks to 599.4hp. All this through a 1.94/1.51 set of valves. If the FE head was treated to similar tweaks, I am sure the flow would come up, and performance would jump. Just a few ideas to consider. Joe-JDC