What is the hot ticket for 2019 GT exhaust mods keeping the stock exhaust manifolds? I need to keep the stockers for my race class but can delete cats and mufflers. One header you can unbolt the cat and replace that pipe simply. One header the cat is welded on. Is there a aftermarket cut and weld kit to make that a bolt on system? If not I guess I can just start cutting and fabricating myself. I hate to reinvent the wheel. Ford does some pretty strange stuff.