I bought some queit baffles for my straightshots from cruizer customizing. They are made by Vance and Hines. They are slightly smaller in diameter, but bolted in fine. Sound nice, really like them. According to the Vance and Hines sight, they don't work in my pipes, perhaps the diameter. Here is a link to another option. They are supposed to be good, more expensive though.
http://www.bigcitythunder.com/
Link to the V and H baffles.
http://www.cruisercustomizing.com/de...116&model_ID=0