What is the fine-grained topic of the following text: Our LS7 Version Of This Iconic Small Block Will Bring A Smile To The Face Of Most "Old School" Chevy Diehards Who Want To Modernize Their Ride As Well As The Younger Guys Who Want An All Aluminum Ultra Light And Powerful Engine To Rocket Their Modern Ride. Only return the topic.
Upgrading cars with the LS7 version of the small block engine