I'd put a pair of 500 cfm Edelbrock carbs on there. That is what I've used a few times in the past and they are much easier to dial in than a pair of 1850 carbs. The 1850 carbs are almost impossible to tune unless you're willing to spend a bunch of time with drills and epoxy.

The Edelbrock carbs allow you to tune with primary and secondary jets plus the metering rod gives you control over main circuit and power enrichment.