Asif's workshop is under huma heights building right opposite to nasra school, I live close by and as far as I know his charges are high as compared to other mechanics (personal and friends experience) but I must admit he knows his work, try jamshed road tht's where I go but you will need to get parts from plaza...
and @samar how much did he charge you for the swap may I know if you dont have any problem in telling rgds....