Another consideration. Depending on your build, the 1.90 intakes might perform just as well. I know on the Performaer RPMs that the ports are the same size, and the flow numbers are almost identical. Also, I hear the larger valves on windsor heads can lead the shrouding with the cylinder walls, which negates any performance advantage from the added valve size.

Realistically, aftermarket heads provide the biggest gain on the exhaust side anyway. That's where factory windsor heads sucked the most.
[addsig]