@stevie1 you have few multiple options steve ...
1 - Contact Mr Zahid who is thr president of PBC motor Cycle Club here is the link you may have to give him a call.. plus I will message him so he might now that you will give him a call... and he can help you get exhausts for your bike.
https://www.pakwheels.com/forums/bikes-3-wheelers/94658-pakistan-bikers-club-pro-file-join-4-free
his id is @malikg115 he is an open hearted biker and I am quite hope full you will not need any more help after talking to him....
2 - there is another Bikers Club MAP which is visited by almost any foriegner who comes or cross Pakistan and I am sure you can contact them as well and they can help you in almost any regard related to bikes..
https://www.pakwheels.com/forums/bikes-3-wheelers/206602-map-motorcyclists-association-pakistan