Will this bolt directly to my engine without modifications?

This header is engineered for LS block fitment. Test-fit before final tightening to verify clearance with your specific oil pan and accessory configuration.

Do I need to use high-temp gasket material or sealant?

Use a quality high-temperature gasket rated for exhaust temperatures. Refer to your vehicle service manual for torque specs and proper installation sequence.

Can I run this on a stock or modified engine?

Stainless headers work on stock and modified engines. Flow gains depend on your cam, fuel system, and tune — pair with a compatible exhaust system for best results.