You can get all the 383/400 Low-deck BB 6bbl set up from Mancini Racing & Summit Racing, it's about near $2500 for everything new, 2 outboard 2300 Holley 500cfm Vacuum carbs, center 2300 Holley 350cfm carb, intake manifold, choke stove, fuel lines, valley pan/gaskets, vacuum hoses, coil mount, 6bbl air-cleaner & element, throttle cable & linkages, fuel filter, nuts bolts, throttle solenoid, wiring etc... it adds up pretty damn fast, you maybe able to find the 2300 Holley 6bbl carbs used "a little cheaper", but they will need work probably, they always do... The 2 x 4bbl set up maybe cheaper, in the long run, just because "one less carb" & the dual Edelbrock 550cfm carbs or the 390cfm or 600cfm Holleys, are usually far less money also...... I prefer the 6bbl set upmyself, but the 2x4bbl is damn cool too...