BEAUTIFUL! I am planning to do this to my rally car this winter. Reinforce the strut tower top, then brace, and remove all the OEM sheet metal. I was also considering adding bracing from the towers down to the diff/subframe.Close to 15 pounds of sheet metal gone. I got the plates tacked in. I pre bent them on the bench to contour the tower.
Also use quick fasteners to mount the lexan rear window, so I can remove the window with a few 1/4 turns, making it a lot easier to work on struts (especiall a coupe).
Drawback is that you would have to make a bulkhead to separate you and the fuel cell, if you put one in the car, according to most sanctioning bodies.