Titanium? It must be light. Is there a stock cat, or muzzle onboard? Did you try beating it into place with a big rubber mallot while it was hot? My point is this.. The oem cat is an immovable object.. Get some 11/2" hose clamps.. Snug them up.. Maybe remove that piece.. Shorty. Do you have passengers? Shorty pipe with rearset delete? Thats like 50 pounds ligher. Maybe, fab up a cool piece of metal? Drill some holes? Idk youll get there.