I went to these people estimate in hand for $550.00 They did the same work plus charged my AC for $390.00. I ask a lot of questions and they answered them all, and even spoke to my Dad on the phone with more qustions. I think I found my machanic, give ehm a try unless I'm waiting then wait till I'm done. 617-623-3333 640 Boston Ave Somerville off Broadway in Ball Square. Right accross from the Powderhouse Pub.