I bought a chinese alumin(i)um radiator on Amazon. The price was very good - $126, but I was a little concerned to discover that the radiator core is significantly thinner than the original radiator. The core doesn't really fill the frame and is about 1.5cm or 5/8 inches short of the frame on both sides. See the pictures. Does anybody else here have a radiator just like this one, and is it adequate?