Cutting bracing to install lights
 

Is there any reinforcement or other work I'll need to do after cutting the bracing like below:

http://fd3s.net/lights/RE_Amemiya_cutting2.jpg

I'm installing evo-r' but putting my own projecter in. I won't need to cut as much, probably only a 2x1 or 2x2" section on the inner sides.