Update

I spoke to the mechanic who worked on the car last month. The oil filter housing was replaced and the rear brake pads as well. The front brakes vibrated when used at high speeds downhill. The repair would cost $350-$450 and was not performed.

The mechanic says it's a good deal.

It is really inexpensive-- $2,000 to $3,000 less than what used car dealers are charging.

I'm going to sleep on it.