twin turbo set up

[cutlasskid]

i going to change my set up alittle i have the 383 tt set up with efi on it i would like to down size my cylinder heads i have the 230cc intake runner iron eagles and would like to go with the afr 190 or 210 not sure on what size to so with and also the intake manifold i have the team-g now but was thinking the air gap intake, would this be a better combo for street ??