This is bolt on package now as we redesigned the mounting base ring to fit the larger .85ar Compressor cover used on our Gen3 7875. Parts that come in the kit     Its 2 step install process. Install ring as shown below face down

DO NOT INSTALL LIKE THIS

THIS IS UPSIDE DOWN Second step install locking tabs to hold cover to backing plate. Completed install should look like this Install is done and you now have your .85ar High flow Compressor cover installed on your next gen unit.