Development of Saab 37 Viggen started as early as 1952, three years before it's predecessor Saab 35 Draken even flew. Serial production started in 1970. The aircraft was constructed to be able do handle temporary airfields on the Swedish road network, therefore it had the small canard wings and a reversible jet engine. The versatile Viggen was used as fighter, attack, reconnaissance and a double seated trainer. It only saw service in the Swedish Air force where it made service until 2005.
Here are pictures from three Viggen. One AJ 37 displayed at Aeroseum in Gothenburg, Sweden, two AJ 37 displayed at Västerås flygmuseum, Västerås, Sweden and one AJS 37 displayed at Flygvapenmuseum, Linköping, Sweden. Finally there are pictures of a flying Viggen at the Swedish Air Force day at Ärna, Sweden, August 26 2018 taken by my friend Mikael Fritzing.
There is two main kits of the Saab 37 Viggen one from Special Hobby and one from Tarangus. Special Hobby has released one AJ 37 (attack), one AJS 37 (attack) and announced a SK 37 (double seat trainer). Tarangus has released a JA 37 (fighter) and a SH 37/SF 37 (reconnaissance). This means you can build all versions made.
I have only built the Tarangus JA 37. It was a good kit well worth my time.