I purchased a gs450e just for the general look, it makes a great little cafe racer stock, but with some mods and customization they really are such cool little 'around the town' cafe racers. If you have no luck finding a tank, you could always attempt denting in a different model gs450 tank or tank with similar mountings. I have done it before with almost no experience. I used a rubber mallet, rounded off one of the sides and very carefully dented the tank in. I don't have photos anymore but if your into metal work and you dont mind putting the time in, that could be a cheaper option. ..or just fun.