I saw the Viggen fly last year at RAF Waddington and I was very impressed. I like building the old Airfix kits I thought I would give it a go. I re-scribed the raised panel lines, scratch built a cockpit (all you get is a seat), vacuum formed a new canopy form the old one and did a bit of rubbing down. It was great fun and I loved the lot.
Here is the build thread http://www.britmodeller.com/forums/index.php?/topic/234983864-172-airfix-saab-37-viggen/
Anyway here are a few photo's and I hope you like them?