They were not Herco brand but I did have a failure of an aftermarket D580 coil.  I replaced them with AC Delco D585s after that.

Tracy

Sent from my iPad

On Dec 28, 2012, at 3:32 AM, Stephen Izett <steveizett@me.com> wrote:

> Hi Guys
>
> An ebay store in the States is selling D580 coil packs under the Herko brand for $15USD each.
> I currently have Renesis coils and was planning to change to D580 fired by my EC2.
> Has anyone had failures of D580 coil packs and are there D580's and D580's.
> Is anyone aware of cheep copies that may not be up to full spec?
>
> Thanks
>
> Steve Izett
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html