Polo is an expert in wiring up the motor, not for swaps. We have Nouman (Nomi) at Tariq rd, Asad (moak) in Gulshan, Nawaz in DHA. OP, I can give you Nouman's number if that would help.
Where exactly is Arshad? Because I live near Iqra and know almost all mechanic/denters there and trust me, they're all monkies with tools.