Emil,
I recommend that you contact Kerry Sterner, Facet designer, for info on any kitting of the 2300 Series. Kerry's contact info is at the bottom of Posts 1 & 2. I know that semi-kits were produced and sold by Great Northern Models many years ago. These were laser cut parts of the formers/doublers and foam cores, etc. Great Northern also produced semi-kits of the Series 1200 for the smaller turbines- 8-12 lb thrust. I'm currently building a 1200 series but from plans and everything has to be cut, joined and assembled to a finished flying model. Also note that Kerry designed a Series 1700 Facet for the 17--22 lb turbines. Some builders have even installed retracts in this version. The Facets are great for "every-day" sport flying jet activities.
Rgds,
Art ARRO