If you plan on staying N/A then I would say that the cobra/GT40/Explorer will work nicely with the heads you have chosen. They will help keep your lowend torque.
But if you plan on a blower, or want to really rev it, then look elsewhere. Trickflow trackheat, performer RPM.....
I can tell you from personal experience that the explorer makes pretty good power, especially for the price.
good luck with your decision,
-Drew
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NMRA O/C 9516
NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft
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