This is a bolt on alternator which is necessary for any LSJ converting to turbo. When going turbo, the OEM belt is not used, supercharger is removed. This requires a new tensioner, belt, and routing.
Direct plug in, no harness adaptor needed
Kit comes with tensioner, belt and bolts required for install
*The alternator bolts right to the block for turbo swapping. You eliminate the bracket.
These may be reconditioned units.