I did thought Airfix should starting to upgrade some old moulds... not because they were that bad, but because they did made some uncommon aircraft... this one is around since the seventies?...don't know... Its not that bad, but you need to upgrade the exhaust... I don't know if the wing is corrected, as the 707 have had several different ones... Its not that bad, but... will require some research if you do want to make it right...