Nice ride! And welcome to PakWheels 4x4 Forum!
Theoretically and practically the 2LT is a small engine for this rig but given the amount of experimentation and jugglery that we have done here in Rawalpindi and documented here on PW, or rather over documented (thanks to xulfiqar, vcheng, samivodoo, Sherwan88 and Charged), I feel it can still be used to produce some interesting results.
The funny issue with the mechanical 2LT is that there are too many variables (from the pump, to boost controller to the turbo) all of which can be quite easily tinkered with and ajdusted. It is not really possible to assess the state a particular engine is in without a proper inspection by an experienced mechanic.
Suggest that you should drive down to Rawalpindi sometime after eid and meet up for some initial real time assessment, following which we can continue the analysis out here.