I need to get a brochure out and see what this misprint is all about.

The intakes are the same Z71 to LS, although the GM Accessories Performance Intake is a very nice unit.

 

I found it on their website. They list it as an optional high capacity air cleaner (Part K47) that comes with the Z71 package.

 

Oh Ok, the Option code K47 High Capacity Air Filter is actually a different paper air filter element with more surface area (pleats) than the standard filter, this filter is not designed for high performance in regards to engine power, it simply can hold more dirt and debris then the standard element.