The Empenage section was fairly straight forward and one of the easier sections. I installed the Vans wiring harness that was made by Stein Air (excellent company!!) Everything fit as advertised except for a glitch in a separate wire that Vans has you you install. It was about 6" too short, so instead of waiting on a fix by Vans (common to all early kits), I re-routed mine to the floor area and it fit perfect. Vans also approved of the new route. I used the Safe Air static system and it was easy to install even though I made a mistake with the static port. Before I make any corrections, I will fly it first to see if it's even an issue. I installed an ACK ELT in the aft section.