Guys be carefull, im sure you may know the smaller the pully you go the more KR you will get , these Eaton superchargers are heat sinks and get really hot, I am so glad I put my IC on ecspecially with the heat in the summer it cools the charged are around 110*-160* thus letting me drop from a 3.4 to a 3.0.....I can run a 2.7 with proper tuning and less timing, but I chose to run a 2.9 with more timing=free HP and makes the SC spin slower creating less heat and make for a happy engine. I am sure they will make an Intercooler for the cobalts and Ions in the future...good luck with it....my Impala SS suprises quite a few people

ZZPerformance