That's looking great David. I fancy doing one myself after seeing the bird at Newark - but might do it as a 'what if?', in RAF colours! Darned sight easier than that splinter scheme!!!
EDIT: I've just this minute spotted a book I'd forgotten has a Viggen featured, with cutaways, cockpit shots and a number of colour pics, weapon load details etc., plus a huge poster! B*gg*r !!!