i came home back to st.pete for the weekend to replace the alt belt on the gvr4 and get it back up to orlando

i replaced it, then i thought "well i can get my bushur 3inch turbo back exhaust put on while im down here"

its a tsi awd/gsx exhaust so it needs to be slightly lengthened a little in the back near the rear axle, and it needs hangers welded on

well when i went to rainbow muffler to get it put on, they go "OH WE WONT INSTALL IT IF IT HAS NO CAT" so where do i go to get this lengthened at put on if it doesnt have a cat?

clay