Most muffler shops can install the sub frame connectors if you have one you prefer..if not, you might try John's Muffler and Custom on Keller-Hicks Rd in Keller. His number used to be 817-337-4400. He's a good dude but will talk your ear off so have plenty of time if you go there His shop is right behind where we had the LSPBC dyno day event the last 2 years.