is this wrong...

I've got a '67 cuda with a 360. I installed a magnum manifold from a '93 Dakota ($40) with a 2 1/4 outlet on the passenger side. On the drivers side I installed a HP 340 manifold ($140) with the same 2 1/4 outlet.
From there I installed a TTI 3inch X-pipe exhaust kit. Used dynomax VT mufflers (Zero drone and I mean zero). Makes good power and sounds great. Clears the ground and the steering.