get someone to machine up an adaptor to fit between the turbo and the manifold. make adaptor wedge shaped so that the turbo rotates slightly anti clockwise. thus swings the turbo closer to the engine. so, fat side of the wedge adaptor will be on the left in the pic. then bore a hole in the fat side of the wedge and drill/tap holes to bolt two bolt waste gate directly to adaptor so it's nice and compact.
I wonder if that makes sense