At what point would you suggest Aftermarket Axles.

we have a set of stock axles drilled to 4.5 bolt patt. in a 73 duster all steel, fiberglass bumper and hood scoop,2 race seats,no back seat,8 point cage with ladder bars and coil overs, stock frontend just rebuild, that has been 6.20 in the 1/8 mile and no problems..strange spool and gears.....carries the front tires about 3' in the air and about 2/3' out...451/indy iron -1 heads ,glide,and 5500 verta...stock axles are tough..jmho thanks mike

Your not the only one having good luck with stock axles, I ran 10.9s with many 1.5 60fts for 2 yrs. & axles were just fine, I have seen guys slower then me twisting Moser axles, I don't think having slicks are the issue, Maybe DRs, Slicks have a softer launch as they wrinkle a bit, DRs hook harder (when they hook), I also feel having a spool helps control any major axle flex in the housing (back bracing is another plus), I run spools on all my mopars anymore, I just feel there more stable & stronger.

Running 12s in an A body i wouldn't even worry about it, especially with 2.0 60fts. Stock 8.3/4 axles are stronger then most think.