A copy of the PDF version of both the ACE & ACI eManifest request form can be downloaded from this page. https://www.customscity.com/ace-aci-truck-emanifest/ace-aci-emanifest-request-forms/ 

The same link above also has a link to make online requests for ACE & ACI eManifests. 

Truck, trailers and drivers/passengers can also be updated using the online request form at the link above.