If you guys recall, there was an article in Hot Rod magazine (around 1 year ago) titled "LS1 cookbook", where they took a stock GMPP LS1 crate engine and got 530 hp out of it.

I have since lost the article, but I wrote down the part number of the camshaft they used. The number I have written down is the Comp Cams' XR289HR. However, I cannot find this cam, even if I Google it or check on Comp Cams' website. Just want to make sure I wrote this down correctly. Does the XR289HR even exist? Does anyone have the article to verify this for me?

Any help is greatly appreciated.