What will bolt on? Exhaust.

I have a friend who has a 98 b2500. He wants to get a new header. What will bolt up, or if someone knows anyone who makes performance headers please help.

I'm not exactly sure about the newer body style Mazda's but Pacesetter makes headers for our trucks.

A Ranger manifold will bolt up. Can check Pacesetter, but being newer than 95, it would be OBDII, and an aftermarket header may replace a catalytic converter, and upset the downstream oxygen sensor, tripping a check engine code and light.

Unless he is doing more than just the header I don't think it's going to help much performance wise - and I echo befarer's comments.