Mistake happens to a lot of folks-- but do the dealers you called know you're not looking for an A91? They might be telling you a year wait for a tan interior you don't want.
It looks like it fits fine. That’s why there’s slits in the coupler. Bend the slits a little bit and pound the coupler on. It’s intentionally tight to prevent exhaust leaks..
If it’s really giving you shit use an exhaust pipe expander, some heat, and some muscle. Expand it out a 16th or so of...