Isuzu d-max utah twin turbo 2012 - Engine problems - Guleid

Am having trouble with my engine even after overhaul and replacing the turbos i was told this is due to how the pipe assembly from the turbos to the engine is not assemble correctly. The local isuzu dealer cannot help they told me they only fix local cars an mine is isuzu ment for the european market. Even getting a workshop catalog or pictures of the engine exposed on the web has proved to be a nightmare and the fact that this model of isuzu is extremely rare in kenya make my problems worse if i had acces to the workshop catalogue or a similar engine i would have assemble the pipes or with help of a local mechanic my engine is 4jk-1e5-tc my vin is . Please help me a workshop catalogue just a page of the engine or even a picture will go a long way.