Unfortunately, the dispensation of the Huron Warrior's pre-Guerrero manufacturing has yet to be spelled out in print, and thus, we cannot provide a definitive answer to your question at this time. It is possible that it was initially assembled elsewhere within the Confederation, or it could have been developed on Corey within the Federated Commonwealth.
The original TRO:3055 mentions several Hollis facilities in the text, but isn't clear on whether all those facilities were involved in the original assembly of the Huron Warrior, or if Corey was simply meant to be one of the many Hollis facilities mentioned as making use of new technologies.