Exhaust repairs in ACT?

hi guys,
 
My mechanic thinks I have an exhaust leak up near my turbo somewhere. The exhaust was put on by some place in fyshwick about 5 years ago. I don't remember who it was, as it was somewhere J-Racing sent it trying to fix my exhaust temp sensor light always coming on. And the J-Racing receipt has minimal detail on it. On the bright side, the mechanic I went to was full of praise fo the exhaust system, calling it a work of art (and not in the 'gee that's messed up' kind of way).
 
So, can anyone recommend a good place to get my exhaust checked out/fixed?
 
cheers.