A6 4.2L C5 Catalytic Converter Install - how to?
 

I need some help.

My mechanic will be installing both catalytic converters on my '02 4.2L and he doesn't know how big of a job this is, or what parts need to be removed. He replaced a cat on a 2.8L V6 and had to loosen the subframe, lower the motor and transmission to get at the bolts coming off the exhaust manifold. So he thinks it will be worse with a V8.

Can anyone give me some removal and installation information or a good place to find this information? Anyone know how long this takes at the Audi dealership?

Thanks!