Einar makes excellent kits, but they require a lot of work. Fiberglass fuselage with foam cores. No panel lines molded, but the outline and profiles are accurate scale, based on SAAB factory drawings. Einar is a Viggen fan, and has made molds for 1/10, 1/9 and 1/8th scale.
I do not know if he is producing kits at the moment as he is busy on his new JAS Gripen model.
Quite a few Viggen kits have been made, but not nearly all completed, so it should be possible to find one lying around.
Rumor has it that www.overfly.dk has obtained a set of molds, maybe a place to start.