I like and use comp Cams, for your deal I would look at their part #20-616-5 ,grind #fl272B-6 or the next bigger one Pt #20-635-5, grind #XTQ281S. I would install either one on a 101 to 103 intake lobe center and go have some fun devil up twocents
All the SB I've built and help the owner race like the close LSA and advancing the intake lobe opening from 3 to 6 degrees closer to TDC from straight up up
As far as the carb size and part numbers your on your own with the Eddys confused If you had access to a pair of Holley 1850 I would use those in a heart beat, or maybe a pair of Holley 600 or 650 CFM D.P. work
I'm a drag race guy, so keep that in mind shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)