Life after Holley Sniper - back to Carb

650 AVS 2 would probably be damn near PNP out of the box, that and the ease of tuning would get my vote.

going the other direction, the tried and true 1850/3310 wonder twins would be a solid choice as well. or you could keep it in the holly family with one of their new lines like the brawler, demon, donnybrook or fracas-- all of which have endless tuning capabilities.

you don't need anything more than a 750 to make that thing sing.