It is fairly straight forward once you remove the existing handle & fill the holes, the hardest part is welding in the pieces of metal to fill the existing handle & key holes (and then repainting the doors/car). Somewhere on this board are the measurements on where to place the GTA button and door pull... I can't seem to find my template right now.... The button lines up with the door latch release tab on the inside and no real mods are needed.
Regarding the release latch... That is in a horizontal position in the original set-up, thus you can never reach it with the GTA push button, correct?
In my opinion you would have to change the angle of the latch almost 90 degrees so it is in line with the button. That way the latch position also "dictates" the position of the button.
The latch position can be changed very easily by filing off the top of the little pin that holds it in position (somewhere halfway), then lift it just a little with a flat screwdriver so you can move it. Align it with the doorskin. mark, and weld.
It took me about 2 hours from figuring out how to do it to completion.
(have to admit my doors are polyester, so easy drilling/filing to fit the push button.)
I had never seen how it was done for "real" so to say, but this seemed to make the most sense. If anyone could tell me how it HAD to be done I'd be real glad.
I do have pictures from my set up that I would love to share, but I do not have a photobucket or so at this point, so if anyone would post my pics please let me know and I'll mail them.