That would make sense, based on the angle of this fitting, as I think the US cars had a front-mounted (?) "opening" in the valve cover.
Don't know if I can make that work on this car though, as the only fitting on the valve cover on that side of the car is the PVC, and it's about 2/3 the way towards the back. Picture I have from when Bazza was starting to tear-out the engine, before he got sick:
I don't think the carb is original to the car, as there's an aftermarket rebuilders tag on it, so that could have something to do with this as well.