I had a buzz when I ordered it. Fluidampr 720301

I am building up a Magnum stroker for my Demon. I am looking to keep the serpentine set up. I ordered Fluidampr 720301: Harmonic Damper Mopar 318/340/360 Small Block Engines | JEGS the other night for my build. It arrived in the mail yesterday and I had a question... can I use this damper with the serpentine set up? The original balancer was stock and had the pulley cast into it. I am going zero balance, and will install one of the bolt on pulleys to the fluidampr. My question is I guess will this part work with the Magnum serpentine set up and line up? The part is listed for small blocks up to 1992. Hoping it works.