I haven't called F5R yet. I figured if I have to buy something I probably should look into an improvement. I purchased my pipes ceramic coated from a memeber here but I don't have the hangers or any hardware or gaskets. I plan to use copper RTV for the gaskets and used nuts and bolts I had lieing around for my first start. I have since purchased some 1 1/2" bolts for the pipes. I wasn't sure what to do about nuts... should I go with lock washers and standard nuts or the rimmed style self locking nuts (not nylocks). As far as the actual hanger... I'm up for any suggestions. You guys havnt steered me wrong yet.