http://www.afabcorp.com/AFCO_Dynatech_USbrake/merchant.mvc?Screen=CTGY&Store_Code=Dynatech&Category_Code=split-flow
They look like a standard race muffler with a divider down the middle. You'd probably want to stick with a Magnaflow or something. Some of these split flow mufflers are very short and small in diameter.... meaning they would be loud. Lood for the longest, biggest Magnaflow style muffler you can effectively fit under the car for maximum flow and acceptable sound levels.
Good Luck!
------------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
