4bbl carb question

Thanks a lot guys! Saved me a lot of time sifting through all the adapters out there! All the parts accumulating is almost complete! I'm posting another Demon SRT6 update soon. Had some acute fall backs, but I'm staying relentless, and on top of this to get it on the road by early spring (which in Ohio could be as late as May, lol). Have a rivalry race going down on the 4th of July (against a pretty savage Nissan 240), and I got to get this engine running so I can bolt up this 8.75 rear end I got and really hook up! So I need all the time/help I can get...