Descent 200 block to start,pistons and rods 14 and 16 cam ,set of 750cc injectors and then the turbo of your choice,big factor is have the rotating parts balanced by someone who knows what they are doing,obviously new bearings oil pump gaskets etc,it’s no real secret to get that sort of power reliable these days especially with the modern ecu,s .Was making that power 20 plus years ago with not so much choice regards parts and tuning