Tom,
Hope you can find someone with attention to detail. The installation is bad enough, but the adjustment is equally trying. The installer will need your top up and the front windows in the up position. Sometimes both the front and back window need to be adjusted simultaneously to get them right.
I have spent the better part of a day just adjusting the windows and they are very dependent on the door hinge and door alignment. To me one of the most tedious tasks on a restoration of a Mustang.
Rob