Do I need new hangers or clamps to install this?

The catback bolts at the converter flange. Check your OEM hanger locations — you may reuse existing rubber isolators. If any are damaged, replacement hangers are inexpensive and widely available.

Will the burnt tip finish wear or need maintenance?

Burnt stainless is a heat-discolored finish baked into the metal. It won't peel or chip like paint. Light cleaning with a soft cloth keeps it looking sharp; no special treatment needed.

Can I return this if it doesn't fit?

Test-fit the flange connection at the catalytic converter before bolting everything down permanently. Once bolted, fitment issues are on the installer's end. Verify bolt alignment before final tightening.