Originally Posted by Alkatraz

If your mechanic needs detailed instructions to install something that 100's of numpties such as myself can do in their own garage, then I would truely suggest that you look for a new mechanic.

I just pulled everything off from the muffler forward to the cats, then installed the new cats and everything back to the mufflers. You can make small modifications to get it to line up if necessary but if anything is more than a few mm's out then you haven't actually bought a Fast Intentions exhaust!