you will be needing plenty of time, resources and PATIENCE to manage a respectable rework on this vehicle. if there is a 2C diesel & 5 speed transmission, it has enough muscle. Get the diesel pump tuned from Cummins Diesel at shahrae faisal. use google search over the forum for diesel pump shops.
from the vehicle regn plate i recon you are in Karachi ??
one last suggestion, before you start to dismantle the vehicle. source all parts including body cosmetic parts, suspension,break shoes, interior, specially front & rear wind shield rubbers (gaskit). The dashpad can be fixed from FB area, meter cluster can be fixed from Hafiz Jee meter shop at plaza auto parts market.