Here's a recommendation for Customizing Connection in Gaithersburg, just a short drive from DC. http://www.customizingconnection.com/new.htm I had an aftermarket part installed and tint on windows done recently and was very impressed with this shop. It is the best I have found in the area. The owner, Dave, is very helpful and skilled at custom work and all of the staff are very friendly. The shop is very comfortable with a nice waiting room where you can see the work being performed on your car, and there are several restaurants a short walk away while you wait. The work was performed very professionally and at a reasonable price. My thanks to Customizing Connection - I'll be back.