So this local mechanic said he will charge $520 to install a new rear exhaust manifold and he gets his parts from the Chevy dealership. The part is $225 and his labor is about the same plus tax. What didn't make sense to me was he said he will cut behind the cat and re-weld it. He said that the exhaust manifold is stainless steel that's why it's expensive. Seems to me the front manifold is cast iron I would think the rear is the same too.
Any thoughts on all this?