Do visit and discuss with Osama Car Care (0300 4106898, 0321-4106898) Garden Town even if you are intending to use another workshop. The owner is a Pw member and carries a strong repute e.g. given at end of post.
Madina Motors (if we are talking about the same one) is near Tamaseel Theater on Ferozepur Road. But ask for consultation from Javaid Sb.
Can also check with Waqar (0333 4314265) as he use to work on some rally rigs.
Do take more than one opinion on problems and spend a little to get it done right the 1st time coz otherwise 80 can be a money pit.