Feel free to post all you want on this thread - maybe it will help the next guy that comes along.
Did you have to modify or swap the a-arms to install the bags?
I found another web site that has some interesting tidbits, like VIN and trim taf decoding, colors, etc -
www.60impala.com
After looking at that site, I think your steering wheel is correct for the Biscayne, and mine came off a Bel-Air.
Do you happen to have the backspace info handy on your rims?
Thanks!