I had my Flowmasters installed by AutoFX in Tacoma. They also did my paint job and window tint - great guys. I was originally going to order the exhaust and just bring it to them to install, but they were able to get the exhaust for only about $50 more than the cheapest price I could find, and that $50 was well worth any hassles of delivery and getting it to the shop...
http://www.autofxtacoma.com/