Need a bigger Holley main body upgrade for a old 950.

[NXBOY]

Heard the proform 950 was a bit bigger in the Venturi but the one I had in past had core shift in bores. Heard the holley true 950 is a poor design. Need to find one that is about 50 cfm bigger then the old 950 cfm, They flow around 830-840 wet CFM. I have a milled ported 9380 will this flow more?? Plate has stainless blades and thinned shafts and butten head screws. Leaving off transbreak with 521 cubes-800ish HP 1/8mile street strip.., Thanks

[nabx22]

At 525 ci I would look at a dominator