Holley Strip Dominator vs. Edelbrock Victor 340

Just a little info : I just got my 367 ( 40 over 360 Magnum block ) 585 lift cam , 10 to 1 compression 0n 93 octane pump gas , ancient W2 heads , Victor W2 intake, AED 750 hp carb, off the dyno the other day it made 527 hp at 6500 rpm it started to drop hp a little over 6500, max torque was at 5200 and it was 467. I shift at 6500 so its all good. I am still putting it back together but after thrashing on the car for 40 years with 6 different small block combos in my car : 68 Dart at 3150 lbs. with me in it , 904, 4900 stall 8 inch Ultimate converter, 4.30 gear, 1 7/8 Tubular Automotive headers ( new ) It should run 10.70s, 60 fts. in the low 1.40s. I run on a throttle stop to run 11.50s for the class I run it should go 11.50 at 116 with 1.49-1.51 60 ft.

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That thing is picking them up and putting them down for sure!
Do the heads have much work and do you know what they flow?