Hi,
One of the best shops in the country is located a little east of Cincinnati at I69.
AirMod is the name of the shop.
They have done a number of AOPA sweepstakes airplanes, and their experience and innovation are second to none.
Their services are expensive but most owners know high quality work is worth the money spent.
Unfortunately, I do not have a catalog of other shops.
You can ask around your local airport for some guidance, or ask at your local maintenance and/or avionics shop.
Let me know what you decide.
Steve
