No wider than most 4 cylinders, and a lot shorter and LOT less tall. The NSU motor fitted east west in a GS engine bay well enough, and they are not that big.Ray Bell:
Yes, that's all been covered...
But what about the engine width for installation in the east west engine bay?
I mean, you've got a rotor housing wider than an average block, then the manifolding etc, it's a pretty wide thing.