[tmoss]

If your handy with carbide bits and have the equipment, you can get a stock intake to flow 200cfm - my website has instructions on how to do it and many tech articles on the dyno and track results of doing it. For E7 heads (even ported if they flow ~200cfm), the ported stock intake will make more average power over the idle-6,250rpm band than the Cobra, although it is the next best choice. No need to port a Cobra for stock E7 heads, but your heads may benefit from it as they have been ported.