That damper is the same one that came apart on my 410, pretty sure it is a PROSTREET Damper...........It does fit perfect though, all the pullys etc will line up and no shimming will be required at all.
I suppose I COULD get the SFI approved dampener...159 bucks though. :/
MadDart, do you think just by chance yours was a bad one, or is it possible that all the regular summit ones are junk? What did summit have to say? I need to read your thread again...lol