thanks Guys - reading through some of the other posts, it kind of sounded like people were saying there were diff size pulleys from code 3 for the same application - I just got an email back from Brandon at Code3 confirming what you two told me - thanks for the help

"There are two sizes that we sell. There is the smallest size, which is what you are receiving. It was designed to make the same/more power than the standard 178mm crank pulley upgrade. Then there is a mid sized pulley we sell as well. It was designed to be used in conjunction with a 178mm pulley (dual pulley setup)." - Code3