A driver's side C body manifold will fit nicely on the passenger side of the engine. The exhaust outlet will be facing a bit down and towards the outside.

I don't know a good one to use for the driver's side. All of those I've ever seen had somewhat long outlets that face almost straight down. They would need to be cut off and welded into something more favorable.
Welding cast iron is a pain so I'd either find someone with experience or go to something else.