ive seen exileracing.com make custom headers for the V6 2.5L... you should try contacting them if you want a quality pair. They were prototype, so I dont know if you would be able to get your hands on any, but it doesnt hurt to try! I kinda got dissinterested in making my V6 n/a, just because whenever you've owned a turbocharged vehicle, you'd never turn back, just like moving from dialup to broadband internet, right? hehe.

idk, just a suggestion...