Will this bolt straight to my stock catalytic converter?

Yes. This system is designed to bolt directly to the factory cat. No adapters or modifications needed.

Do I need to remove or modify my heat shields?

Test-fit before final tightening. Some factory heat shields may require minor clearance work depending on suspension setup, but no cutting or welding required.

What do I need to tighten this down?

Basic hand tools and a jack. Refer to your vehicle's service manual for torque specs on all fasteners to avoid overtightening.