‘76 Duster with a 360 and sunroof (not mine)

75 cats were mandated, but some vehicals were exempted till 76. That’s why the cat hump is in the floor pan on the passenger side of 75 A bodies. My car is a 75 duster 360. Factory hp engine with 4bbl, dual exhaust. I’ve only seen 2 76 dusters with 360s and that was way back in the late 70s. Both were 2bbl with single exhaust. Kim