6PSI - 20PSI BOOST PULLEY UPGRADE KIT TO SUIT HOLDEN L67 SUPERCHARGED V6INCLUDES FREE LOAN OF THE PULLEY REMOVAL INSTALLATION TOOL ($190 bond required which is fully refundable when the tool is returned in satisfactory condition) Our Mace L67 supercharger boost upgrade kit comprises of a special modular hub, pulley size of your choice from 3. 8" (6PSI) to 2. 42" (20PSI) and a free loan of our factory pulley removal installation tool (additional $190 refundable bond required). Our boost upgrade kits are a cost effective
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