289's compared GT-40P's???

[Coolbreeze]

I heard how good the P heads flow but how do they compare to 289's. Would a set of gasket matched(1250-I & 1415-E) 289's with lager valves (1.90- 1.60) work as well as the P's??? I ask because, I already have the 289's and just was wondering if I should sell them and get the P's. I would love to get some Edlebrocks or some similar aluminums but they are way out of the budget range right now.....

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Mike

T-top 86GT in progress......(budget)
Got car for free(no motor/trans or interior) and have a total investment of $ 200 and some labor time.....

**Part list so far** Adjustable 225 hp Compu Car N2O Kit,, Mac long tubes,, 8.8 from Turbo Coupe(auto),, Comp XE 264 cam,, Ported 289 heads,, Crane 1.6 RR's,, BBK 65mm TB,, 4pt rollbar,,