Ed, If you are thinking about the wheels on the '73, those are called "Convo Pro" wheels. I bought them from Bob Lindquist, who is on this board. Good luck finding them.
I got the last set in the country thru the GS Club 6 years ago they are on my GSX in the pic. can't buy New anymore and they are very hard to find in the right size and they are not cheap at all :dollar: .
I have either two or three sets of these. Have to do some digging. One set in use, my son has another set probably in use and I know I have two fronts here ( 15X 5 1/2 sticks in my mind ) and the rear set to go with them probably has a set of slicks mounted on them at his house...... available, maybe....
Thanks for posting my pic's Fastest430 .These are the 15 by 7's allso have 8's and 10's if any one is interested let me know .Thanks Brian
Saw these if you're still looking: http://www.turbobuicks.com/forums/parts-sale/70897-going-back-stock-sale.html