When building a non-certified aircraft, the builder has the option to deviate from the plans, if they follow them at all. In general, I’ll be following the plans provided by The Aircraft Factory for the Sling TSi, but I will call out options that I’ve installed that were non-standard, or not in the plans at all.
Three of the main points of customization are the avionics, the primer used, and the paint used. Each of these three points are important enough to get their own page.