I think the trick with this set up would be synchronization. There is no common tract. The carb on the left could be seeing 5psi and the carb on the right could be seeing 15. Also, the left carb would be fed by the right turbo and vice/versa. Not things that can't be overcome, but something to think about. I think it would be a neat set up.

"use it 'till it breaks, replace as needed"