Im not sure?I had that same problem with my other bike it was a 1996 yamaha yz250.Couldnt find graphics anywere.Im thinking you cant find them on the popular d-bike parts sites.You could find them were you least expect it.The only ones I can think of is OEM graphics that are stock replacement graphics.Good luck with your search!
i know someone who can rebuild your frame to fitt a new tank and radiator panels but thats over 500 usd so i think its best you go to someone who can make you your graphics