What stall for my 340 727????

i had a 9.5 lupo 5000 and a 8 turbo action in my 340 and love the 8".....with a 950hp carb i may have had a little more comp. like 11.1 oh sorry now i see you have 3.91 gears ...i had 4.57 and 28/10.5 tires