I'm late to this party, but thought I'd add . . .
With the SVE mufflers from LMR, the driver's side, front-most hanger/rod was wacky. I could only get it to fit in the OEM rubber hangers by unbolting the OEM hangers, sliding in the rod, then bolting back up. And even when done, it really stressed the rubber of the OEM hangers, as the mufflers wanted to pull it in a direction it didn't want to go.
Recently replaced with Borla Tourings. They fit much nicer in the OEM hangers without stressing the rubber . . . except the front-most hanger/rod on the pax side is too short. If I move the mufflers forward enough to position the muffler tips where I like them, the rod comes out of the OEM rubber hanger. I ended up having to allow the muffler tips to stick out the back further than I wanted so that the mufflers hung secure.
Point here, even a decade and a half later, the aftermarket still hasn't gotten it right with these damn things.