I turned all my own wrenches for most mods. While not “Viper Techs,” I have used Vorshlag in Plano for a recent clutch install and they also did my corner balancing and ride height on my MCS suspension. (I don’t own scales, and did not want to kill myself pulling the tranny in my garage on jack stands.) Vorshlag is run by a NASA and SCCA racer buddy of mine from way back. I trust those guys with my car and all work done has been great. Vorshlag does a lot of custom fabricating and engine swaps, so they are not your usual shop. Call and talk to Terry if you want and tell him Kyle sent you if you want to give those guys a look.
http://www.vorshlag.com/