Do I need new gaskets or hardware to install this?

You'll want fresh exhaust gaskets at the catalytic converter flange before you bolt this on. The assembly itself mounts at factory hanger points—fasteners and hardware for that step aren't confirmed included, so grab a gasket set and verify your hanger points before install day.

Will this fit with an aftermarket turbo or supercharger?

This is designed for naturally aspirated tC engines with stock catalytic converters. Boosted builds change the mid-pipe and exhaust flow path, so you'd need to confirm fitment with forced induction setups—don't assume direct bolt-on compatibility.

Does the stainless steel tip need any prep or polishing before install?

The tip comes polished and ready to install. Over time, heat and exhaust buildup will darken it—regular cleaning keeps the shine, but no pre-install prep is needed.