carby size help

hey guys ive got a duster with a 400/727/8.75 with 3.23 gears, wanting some advice on my setup its standard bore possibly aftermarket pistons as they sit quiet high in the cylinder, 452 closed heads, performer low rise manifold, 484 cam, hedman b body headers, and a small block stall which im told will be about 2100.

its still a project and not finished and its my first carby v8 so im not sure if this setup is gunna work well, not sure of exact engine specs but it looked allrite when we pulled the heads an pan, just want a cruiser with a bit of poke and it will be upgraded down the track, any advice would be appreciated on carby size and possible changes to make the most of a cheap setup, cheers