If I'm seeing what I think I'm seeing, thats a very nice IC. I believe its based on the Speerco. That size is bigger than the one I ran on my last L6 motor, which was the one sold for the supra I believe.
So in my opinion, thats one you don't want to pass up for a good price.....
You might want to have one of the end caps reversed where they will both be on the same side, to keep the plumbing down.