good chance the upper intake has a crack and thats what caused the coolant to leak in the engine. or they never changed the oil after the lim job. either way they should be liable if the engine is blown. the fact they fired the guy who worked on your car is case enough if you ask me.
and why are you fixing vac lines the shop broke? that dont sound cool at all. why are you paying them? and why did it take a week? did it sit there for days waiting to get worked on? or was it apart for a week? sounds fishy also.
