need a muffler shop in houston to mod my dpipe before ceramic coating pls?

[markc0220k]

a yr ago i bought a cobb dpipe with cat, but its outlet ( where attach to the tbe) seems like 2.5", any good muffler shop in houston to mod it to 3 to 3 before taking it to do coating please? i'd made few calls to few shops, but don't quite feel like to let them do it. main concern is not sure if they would make the angle toward to the midpipe correctly, thanks.

 

(reason i didn't exhange? thought about to simply wrap it, until these couple weeks after many reading i believe i better to get it coated:(.)

 

thanks