97 4X4 with 318 magnum.
I want to put in headers and duels.
Does someone make a kit and is it any good?

 

Flowmaster for the duals is very popular. I guy i talked to has the 40 series.

 

do they have the headers and the pipes?

 

My suggestion - get a set of good headers and a universal fit muffler and have a shop weld up a custom bent setup. Off the shelf stuff works fine, you can sometimes save a fair bit of money by getting it made though, or at least pay about the same and get a much better setup.