So here's the deal. I'm planning to swap the /6 bars on my duster for some set that I believe are out of a 318 that have been laying around. The car is a 1972 duster with A/C and P/S, the stock bars read .890. The ones I believe are out of a 318 have a 058 Left bar. Also I have another set that came out of a 1968 /6 Barracuda PS, they read 387 and 327. Which of these three sets will be best for handling? Where can I find for the bar specs according to their #'s? I believe a sway bar will be a best improvement but I have these laying around and will like to use the best I can on the '72.