sorry bro...u wont find ur b series engine there....been there....they say " oye LAKKA tum lahore se idhar aya....idhar se tou sab engine lahore jata....bilalganj..."
but still the engines they talk abt are d15s...not b series engines....i guess ul have to find someone to locate it for you in Peshawar....otherwise ul have no luck finding one on ur own....its really hard to find a good engine lying around...
if u want a good engine we can find it for you from around here....
if u need anymore help u can contact me : 0300 8889903