Will this bolt up to my stock catalytic converter without welding?

Yes. This is a true catback system that connects at the converter flange using factory-style couplings. No welding needed for the connection point.

Do I need to remove or disconnect anything else under the truck to install this?

You'll need to support the truck, unbolt the factory exhaust from the converter flange, remove the factory hang points, and bolt this system in place using the same mounting locations. Basic hand tools and a jack are sufficient.

Can I return this if it doesn't fit or I change my mind?

Contact ModSupply directly with photos or fitment details. Exhaust systems are made-to-order parts, so return eligibility depends on condition and timing — reach out to confirm your options before installing.