Special tooling required,alignment is critical. Now im sure someone will chime in, but my choice would be to have them all replaced. Many years back i went through something similar in a vw diesel.it was a high miler,not worth rebuilding. Required tooling and a reamer to size it. My favorite machinist made a bronze/aluminum bushing and a tool to install it. That commuter car ran for another 100,000 km's.
