Restart the rebuild
My opinion on the carburetors is the Edelbrock style... Sometimes you can find a Christmas sale or buy the factory seconds as well. (Get put on a waiting list)..
From my research and looking at the edelbrocks specifically for the dual quads I found that they are tuned slightly different... Secondaries being the same but primaries staggered a little bit for tip in... Tuning them is likely going to be a process that takes several weeks of warming it up and test drives and frustration and finally getting it LOL.. it should be quite drivable right out of the gate but just getting that nats on feeling takes a little while...
Remember you can always give me a phone call anytime and I'll talk to you about all the nuances that I ran into...