Any 12 second combos with 3.23s?

Whats everyones thoughts on the carb situation. Previously i had a 750 vac secondary carb and i could get better 60' times but only 98mph at the traps. I switched to my thermoquad and my 60' times fell but now im at 103mph and dropped 3/10 of a second on the overall time.... (both on my LD340) I do have an Air-gap intake that i have yet to try.

Would switching to a mechanical secondary DP be worth looking into?