Factory sway bars for the early A's are out there, although it might take some time to locate one. I've managed to accumulate 4 of them (3 thru ebag and 1 from this list over the last 4 years. LCAs up through (I believe) 72 that have the sway bar tabs on the outer end will work for the early A's making that search a little easier. I have an Addco 1 & 1/8 in bar (without any other hardware) that looks to be the same width as an early A. I don't think it'd be too hard to fab up some brackets to fit in the original spots on the K frame.