The sidewalls and floor is insulated with foam and skinned on the inside with mahogany ply. I opted to use fuses mounted on a panel behind the instrument panel. If the fuse blows, I have no business trying to fix it while flying. The fuel pump fuses/breaker are the only exception. A lot of space was freed up relocating the fuses. It allowed for a super sized glove box. The main panel is hinged to allow the panel to swing out and provide access to the fuses, relays, etc under the fwd deck. Both batteries (cranking & stby) are mounted on the upper shelf. It is still a pain to service the brakes. The fuel selector is out of a C 172. There are 3 facet pumps. A pump is just in from each wing tank and a 3rd is fwd of the fuel selector. Rudder trim via a linear servo is attached to the crank with the rudder tension springs. Rudder & Elevator trim switches are just to the left of the fuel selector valve. The seat pan is CF and foam. It hangs between the spars so no ribs were used. The seats were covered in corduroy from a bolt I had laying around. I found a pair of vents out of a Diamond trainer.