This is the idea that I am actually trying to do literally, get this:
get a 2.5" 90 degree pipe and a T3 Flange, weld one side of the pipe to the OBX Transition flange thing, and the other side to a T3 Flange, drill a hole and extend a pipe for a external waste gate and wideband o2. So it will become a Top mount, it got a waste gate, a wideband, everything you need and bolt onto the stock turbo manifold.
And I was wondering if it would put too much weight on the stock manifold and should I brace it on the studs : (