Ran across these on eBay today. I emailed the guy. He said they have never been ran but have been test fit on an A-body so they should work great for you guys!
http://cgi.ebay.com/ebaymotors/ws/eB...=p 2759.l1259
http://cgi.ebay.com/ebaymotors/ws/eB...=p 2759.l1259