That's a domestic Cultus (khyber's) speed o meter, I doubt it will fit in a mehran but let's see what our cheetas have to say about it as there's always a jugar available 
if you do get that fitted then plz post the pics. about its availiblity, try checking bilal gungh lhr, peshawar bara, khi shershah, & rwp babu muhala
best of luck
