its on my L98 camaro.... but it would sound bad ass on mustangs as well.. i'm really liking this setup! it looks like it would have been very loud as its a straight thru tube with some louvered things stickin up.. but its only abit louder than the old flowmaster was!
http://media.putfile.com/Powerstick-Chambered-tube-on-L98
heres what they look like
http://media.putfile.com/Powerstick-Chambered-tube-on-L98
heres what they look like