Just because you're running a BDS Roots Style Blower doesn't mean you have to run a solid hub, you can STILL run a Damper and SAVE YOUR CRANK!
This Big Block Mopar Harmonic Balancer exceeds SFI 18.1 ratings and is designed specifically for Blown High Performance Chryslers. The damper is designed for BDS (Blower Drive Services) and other Roots Blower Pulleys to bolt right up. The damper provides a 6-bolt, "BDS" 2.76" bolt pattern as well as a male 2" pulley register.
Lilke all Innovators West Balancers, it features an all aluminum case design for light weight, stress-proof steel hub and 1040 steel inertia rings for durability. Wet clutch friction design style with precision machined harmonic dampening for street and race engines.