The steering shaft is on the left (looking into the engine bay) and probably interferes with the turbo manifold.

Derryck, ChrisD?

 

I don't know a whole lot about how they mounted it, but just judging from that picture, the turbo would go right where that steering shaft is. So I don't know if it's a feasability for RHD cars, but that's just a guess. Demand is already pretty tempered as it is, so I don't know how much money, time and effort speedcraft would be willing to put into an RHD version.

cd