I looked at those tips too, but the outlets (from a picture only) don't look exactly the same & I stayed with 2-1/4" stock ones. To be honest, I've never compared them side-by-side, but I think you're right that there's only one company making those tips, so I think they're the same.

Somebody else with more/better info?

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"