hi there, im pretty sure the fuel pump from lh volvo wont work on your turbo.
the k-jet system runs at about twice the fuel pressure.
i suggest to purchase the bentleys service manual (around 35.00$) and k-jet pressure tester (around 60.00$).
the pressure tester is very important with k-jet. there is a small screen at the control pressure regulator inlet thats possibly plugged , also possibly a ruptured diaphram. did you check the fuel pump relay? mine worked intermittently from a bad circuit board and bad six pin connector. did you check the lambda relay as suggested?
there is alot of different parts you can (throw) at this situation.
the answers are here in your previous posts but you need to take the suggestions one by one and report back on the results to each individual suggestion.
i dont have a money tree here either, but if i put a price on a repair without knowing what part i need i may never be able to reach my objective.
i know it can get frustrating, what helps me is not putting a time limit to my expectations. good luck