Intake Port Tumble

The best choice for intake using the Stock heads would be the Weiand Stealth. Its a better match and they fit better to the stock heads than the RPM.

That is something I used to write and tell people all the time Mike.
Even Locomotion has found it best on his car. (though he always writes "for my application " LOL!

IMO, people always want proof positive facts and. Numbers over the best advice even if it was from the been there and done that guys