I got a quote recently from Precision mustang performance out in forney. The guy who runs the place Noah has worked on cars for me before, so I know he is honest and does good work. I havent contacted any other shops to compare pricing but what he quoted me didn't seem too far out of line. If you do find some places post back here.
Paramount Speed is new to the area, but has been in business quite a while. Call them up and talk to Michael Ayers. He will take care of you. https://paramountspeed.com/
Try Farmuh Performance in Garland. The guy is pretty cool and dont think they’ll charge too much. `they also have an IG and facebook if you want to check them out.
I found another newer shop in rowlett called Pickle Performance, they dont seem to have a real website but they do have a facebook page and respond reasonably quickly.