The instrument module in my kit was used and had some rather large cutouts that I didn't care for much. So I decided to restored them by closing and glassing the openings. I also built couple of flanges, that point in the right direction mind you (the module had flanges but pointed the wrong way and were pretty much useless), at the bottom of the module to screw it to the firewall. The pictures show the flanges as well as the plywood covers installed and glassed on the inside. Next to do is to glass the plywood on the outside, fill and prime the module. The the fun part, install the instruments.