side exhaust..

They were called Thrush Outsiders. When I was deciding what I was going to do with my car I spent some time looking at side pipes. The Thrush turn up quite often on Epay. Prices range up to $500 for an NOS set in an unopened box.

As far as what's available now;
Summit has these:
http://www.summitracing.com/search/?keyword=patriot side exhaust&dds=1

These are on Epay and are for an A-body:
http://cgi.ebay.com/ebaymotors/DUST...r_Truck_Parts_Accessories?hash=item29fa6a96c0