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You are certainly welcome Pyper, thank you!

For cmansell, our original 440 damper we developed was for a Nascar and certain drag racing engines where they did not incorporate the OEM pulley and used their own modified pulleys. We have since corrected the issue and the OEM pulleys will mate up with part# 720311. I will try and attach a drawing.

If not this drawing and any other drawing for our dampers can be obtained by contacting me direct at ivan.snyder@fluidampr.com or by calling 716-592-1000 and asking for me or anyone in tech. support.

Hope this helps.



Good info. When did you start selling the version that works with stock pulleys?