carb size

[rjs53]

need help choosing a carb it's on my chevelle not the truck but alot of you guys are running fast so im asking for help. chevelle with me in it 3300lbs motor is a 396 sbc 3.875 stroke 6" rod .30 over flat tops .015 in the hole 11.1AFR210 race head 208-160 valves 66cc, cam is solid roller lift is 676in 653ex duration @ .050 is 268in 274ex 108 LS, victor jr with 1" carb spacer i currently have a 750 dp it's run a best of 11.30 @ 119mph track is 4000'. I have a chance at a 950dp but not sure if its to big any suggestion would be appreciated, thanks