Guinea pig cage changes?

http://www.petsmart.com/family/index.jsp?categoryId=2769317&f=Taxonomy%2FPET%2F2769317&f=PAD%2FPet+Type+1%2FGuinea+Pig&fbc=1&fbn=Pet+Type+1%7CGuinea+Pig&fbx=0 this might help a little I don't know how much or how big your cage is now so I couldn't pick a certain one for you but theses are good for guinea pigs!