mechanic in Boston area

[Sussmad]

Any suggestions: I know most work on their own cars and get it done right or at least as best as they can. I can do replacement parts but don't have time, a garage, tools and/or enough know-how for other repairs and maintenance. One guy I have used over the years does it on the side, he is good but lazy (getting tired): another doesn't work on the cars much anymore and got too expensive; Looking for someone who know slant 6 engines and willing to work on them and might even have some passion about them. Trying someone new is a crap shot. Thanks I'm in Needham MA