I'm looking at replacing the exhaust manifold/catalytic converter on a friend's 2012 Mazda 6 with a 2.5L engine. Has anyone done this and is it a difficult or easy task for someone with decent (at best?) mechanical skills? I couldn't find a single DIY video for the specific vehicle. It doesn't look terrible but that's the surest sign that there is a complication that isn't easily visible.

Any comments/suggestions appreciated.

 

Not too difficult.