I installed the left forward interior panel and fasteners. I have to still install the NACA air vents on both sides and plan to do so when they arrive from Vans. I also installed the right mid and rear panels and fasteners. Not much trimming was needed at all. The middle panel still has to be removed to install the outside air vents. On the aft most fastener for the right aft panel, I installed an angle with nut plate instead of just using a sheet metal screw...will give much linger service life. Insulation also is needed.