Man I have been agreeing with you that it is possible, but you can not call it minor mods to run 11's .
BTW This is from the website as well.
Here's another example of how strong these Air Flow Research heads are, even when used a very basic combo. Dynojet results showed a 55 RWHP increase after installation and some tuning. Details are as follows: A stock 302 fitted with a B303 camshaft, 1.60 FMS roller rockers, iron GT40 heads, shorty headers and a stock Cobra manifold. This customer sprayed the car with a 100 shot of nitrous for some extra punch but wanted this type of power without having to fill the bottle constantly.
Swapping the mildly ported iron GT40 heads for a set of "out of the box" AFR 165 heads, a set of 1.72 roller rockers and an FTI ported Cobra lower intake saw some instant results. The old combo started out with 250 RWHP and after the swap the new pieces netted over 305 RWHP! How's that for a street worthy 12 second car. The nitrous kit is now for sale!
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