Has anyone here ever cut the rear pillars to mount 6x9s? I’m doing this because the stock 4x6 speakers really suck and i want some real sound for my mids. I have a kenwood head unit, a pair of kenwood 6-1/2 in the front doors(1995 GMC extended cab) and a Rockford Fosgate P300-12 powered sub in the back. It sounds great but I’ve wanted to replace the rear speakers for a while. I have the interior out already so i have room to get the trim out of the way. If anyone has done this let me know how you did it. I’ll figure it out regardless but some tips would be appreciated. It’s not my daily driver and money is tight right now so I’m not in a rush but when i get to work on it I’ll post pics.