Throttle body sizing for turbocharged LA

Turbocharged 273. Built a sheet metal intake for a TB and injectors. What size TB should I install for a 9-12 psi build? Hoping for maybe 380-400hp. I was thinking maybe 60mm-ish off something so I could get the IAC and TPS all in one piece. MS2 with 33 lb injectors. Street duty only.