Crawford headers 1150.00 high flow cats around 500.00(I think) try their web site crawfordzcar.com. I am sure that they are not the cheapest but they are one of, if not the best you will ever find. I am so happy with both that I think it was one of the best things I ever did second only to buying my Z!!!
Both items are hand made and well crafted by Doug and the gang in Nashville.