Will this header fit my stock exhaust system?

The header connects at factory mounting points. Your existing exhaust components may require adapter fitting or modification depending on your current setup — verify collector outlet size before ordering.

Do I need to prep or paint this before installation?

Stainless steel won't rust, so paint is not required. The header will develop a natural patina under heat. If you prefer a polished look, light polishing before install will keep it brighter longer.

What fasteners do I need to bolt this on?

Hardware to mount the header at the engine block is not included — source bolts that match your factory mounting points. Your vehicle service manual will specify the correct size and torque spec.