Will this fit without modifying my exhaust system?

The header bolts to your factory mounting points. You'll need to confirm your downstream exhaust—collector diameter and downpipe connection—match this header's outlet before final assembly.

Do I need to pull the engine to install this?

Engine removal is not required, but S-10 engine bays are tight. Patience and basic hand tools will get it done; some builders prefer dropping the motor to save time and avoid clearance headaches.

Should I apply high-temp coating before installing?

Stainless steel does not require coating for corrosion protection. If you want a cosmetic finish (paint or ceramic), prep and cure time is on you—test-fit the header first to confirm clearance.