If you are working on upgrading your Cobalt SS Supercharged or ION Redline for off-highway performance, you'€™ve probably already read Chapter 6 of the ECOtec 2.0L LSJ Power Book (if not, you can download it from gmtunersource.com by clicking on "€˜Racer Tech"€™ then "€˜ECOtec LSJ Build Book"€™). Many of you have already emailed, asking about the high-performance cams that are referenced in that chapter. Well, I have some good news and some bad news. The good news is that GM Racing has these cams available, right now, for sale. The bad news is that we don’t have very many.