No body currently makes them (at least that I am aware of). Hotshot & Hooker (I believe it was hooker) claimed to be working on headers but it has been close to a year since there was any news.

If I was near OC there is a fantastic shop that I would run the car by for an estimate on performance gain & price for custom headers. Unfortunately they are a bit far away.

I did receive an estimate from one place to build custom headers they needed the car for 2 weeks (which is currently tough for me to do) and they estimated $4k for the headers. The shop does a great job on many things I am just not sure that building a set of headers is one of their core competencies.