Post 11 second small block combos

my 70 duster 340 in street trim, runs 11.25 121mph 1/4 mile, with 850 mighty demon carb, with my 780 holley 11.40 117 , both runs with a 410 gear, put 456's in hope to get the runs with the 780 down into the low 11's.

currently in the paint shop going from red to black and adding a roll bar, i run with arizona's fastest street cars in the easy street class index 11.50 so they tend to look the other way, but i would like to run in vegas at mopars at the strip and will need the roll bar