527/584 last April dyno on stock heads and headers

I just rebuilt engine and have the trick flow heads/valve train. Will tune and dyno Saturday. I still have the stock cast headers... Im sure thats worth some HP since the RWHP is over 500 all ready.
14-15lbs boost

Then I will part with truck...... I cant take the ride and noise 24/7

(forum mods: I tried to upload dyno attachment but it blocks out new one and reverts to old dyno post from years ago)