Same set up as I have except without cats. I highly suggest using different gaskets than the ones they give you and retorqing them after a few hundred miles. Mine leak and rattle like crazy now I hate it.
That was my biggest gripe about the OBX when had them. I could never stop them from leaking.. Ended up making my own gaskets and using a tube of Ultra-Copper on each side. Then some blue loctite once everything was sealed.. Also tightened them once they were warm too.. Unsure of how tight they are as its been awhile but I ended up pulling the motor mount bolt and used a big pry bar to rock the engine over to gain added clearance.
Not much to report today. Although i did separate the manifold from the midpipe, but i haven't quite figured out how ill pull it out... It's just unbolted and stuck for the moment. I also removed the egr tube. Also got the Y pipe partially separated.