This thread made me decide to go with 3.23 gears in my Duster awhile back, I finally got to drive it to the track this year and it went 10.69 at 124.75 with a 1.51 60 foot. I'm extremely happy with it.
500" low deck, 10to1 compression, small 557 lift purpleshaft cam, Eddy cnc ported MW heads, 950 carb, small B-body 1.75" headers, mechanical water pump and fan, never runs hot.
727 with Dynamic 9.5" converter that needs tightened(17.5% slip), 8.75 rearend with factory leaf springs with one new leaf added to each spring, Rancho adjustable rear shocks, 275/60 drag radial.
Launch at 2000, shift at 5800, trap at 5800.