Sparky,
While that pump mount may allow a right-side installation, I would be worried about its rigidity, especially in the vertical direction. There’s not much triangularization in the structure. By the time you hang a fairly heavy pump and plumbing on it and then get the engine to shaking and vibrating, it looks to me like it is liable to start wandering around--possibly chewing up or throwing the belt--not a good thing for an oil pump to do.