Do these lines come with fittings at both ends?

The line itself is included as specified. Confirm your turbo or supercharger inlet and pump outlet fitting sizes before ordering—you may need to source AN adapters separately to match your specific setup.

Can I reuse factory oil line routing, or do I need to plan a new path?

That depends on your turbo placement and existing hardline locations. The 36" length gives you flexibility, but test-fit against your engine bay layout first—some setups require the line to clear accessory brackets or belt paths.

Is there a return policy if the length doesn't work for my application?

Measure twice before committing. Once installed, the line is considered used. If fitment is uncertain, reach out to confirm your engine bay dimensions and turbo feed point before purchase.