what carb would you put on this set up?

Interesting follow up here. I called to Barry Grant and talked to a tech there. He too has a 351W but with a slightly better build (AFRs on his while I have RPM Performers) and an auto tranny as well. He told me that BG's empirical testing reveals that the W runs better on a smaller carb. He tested a 750 and a 650 on his own 351W and his car made more power on the dyno with the smaller carb AND did better on the 1/4 mile to boot. He suggested a 650 with mechanical secondaries.