turbo header manifold
 

i have a hybrid 13b, 13b housings 12a irons, i want to do a blow thru what turbo exhaust manifold will fit it or does anyone have any suggestions

You can try these guys, they make custom units; www.turblown.net
I also saw one of their sandrail builds on the other forum( something that might interest you as its a blow through)

http://www.youtube.com/watch?v=WQ5tbgnn-Fc

Think I've seen an HKS cast manifold used with a sidedraft.