Turbo 383 in a A-body Barracuda

the carb i had built will support up to 950 horse that would be plenty in my opinion so guess what i'
m wondering is the heads on it now will they support that much power or do i need to step up edelbrock rpm heads that are hand ported or will it be fine the way it is

The 906 heads will limit you! Period. I wouldn't expect more than 800 hp at the crank.