Callas Rennsport is my go to place for my older 911. The quality of everything about Tony and his teams and shop is first rate. Very persnkickety about quality. He only does things right; as with most things, there's the absolute best, most factory, most expensive way, the quick and dirty mickey mouse way, and the smart way; Team Callas always finds the smart way, which may or may not be the most expensive or original, but its the Good Way. Callas techs are superbly trained and always treat me and my car with the utmost respect. Not the cheapest place in town, but I don't take my car anywhere else since 2012. Luv this place and these people.