Inliners International Forums General Discussion Blown and Injected 2 or 4 barrel carb?

I'm almost done with my turbo setup, just need a carb and a few other items. I'm looking at either the holley 2 barrel 500cfm or edelbrock 4 barrel 500cfm. What would be the better choice for the street on a 250c.i. and 6 psi blow through? I have a clifford intake and custom exhaust manifold.
Thanks.