I have a 1998 Buick Skylark. I had an engine put in it almost three months ago.

What is your question?

Before the engine was put in the car it sat for two years. I replaced front brake pads, rotors, rear shoes, and drums replaced three months before the engine went out. Now I have a problem at times, when I apply brakes, a clunking noise seems to come from the back passenger side of the car and then, the car bounces up a down. I've had two mechanics to tell me what they think is wrong with the brakes: Mechanic #1 - Told me that he test drove the car, took the wheels of, saw that there was alot of rust/brake dust, sprayed the car with some type of brake cleaner. After driving the car less than 5 miles, the noise is back. I took it back, the mechanic does the same thing as the first visit. Again shortly after driving it, the noise is back. The third and final visit the mechanic tells me that the noise is coming from the front of the car and that he needed to "turn my rotors" and "adjust the front pads." This didn't sound right to me. I thought that you "bleed the rotors" and "turn the drums." Mechanic #2 test drove the car, took the wheels off the car, and told me that one of the back brake shoes were cracked, there is a leak from the wheel cylinder, my drums need to be resurfaced or replaced, front pads, and rotors all need to be replaced. They said that the problem with the clunking noise and bouncing is coming from the rear of the car. They also said that the fact that the car sat for two years could have made all of these parts "go bad." I'm just overwhelmed with this information. Can you give me your opinion. The engine replacement cost me $1,380. Mechanic #1 - I don't believe is telling the truth nor do I feel is qualified to do the work. Mechanic #2 - I believe as for as the broken brake shoe is concerned and that there may be a leak, because he showed me the wet area & the broken brake shoes. I find it hard to believe that everything else has to be replaced. This estimate is close to $800.