i would recomend the air-bar on rear. this set up was clean , easy to install ,looked real good under the car . we used it under a 68 and then changed the rear axle to a narrowed 9in and it sat perfect . it also allowed us to tuck a 20 under the rear and not show the tire .
i looked at the fatmans set up with the 1/2 leaf and coilover under a 69 and thought with any power this would axle wrap real bad .