So I have embarked on a journey to find a set of Rally II wheels for the 1970 I just got from my father. It has the old steelies and wheel covers on them. I have noticed that many of the wheels I have been finding have a two letter code with them (ie KA, KT, JA etc). I know that the current wheels are 14", but I suspect that the code means something. How do I know what will, or better will not fit the ride? I got my eye on a set of 5 for a great price, I just need to confirm that they will fit.