We primarily just drive to car shows and that type of driving. Not alot of highway stuff really. I think if i end up having to replace stuff in the rear i will look at either 3.23 or 3.42. If I can find that the problem is not in the rear then I will just leave as is. Unfortunately the snowstorm this weekend left my garage to cold to work in and the roads to bad to be on for awhile. So she sits.....
Thanks to all for the info, once I figure out what my noise issue is I will be sure and share.