Simplify Document Management and Editing

We use Sharepoint to version control Word/Excel documents - Mainly Production specifications showing Bill of Material Qty's and manufacturing instructions for blending/mixing ingredients, recently we've been mixing 180 different variations of product and the customer asked to make 1 minor change to all variations. An administrative nightmare... 180 documents had to be opened to make a minor edit.

What are your thoughts, is there something we can use in Sharepoint or an add on tool that could make this less painful? Global data within a specific Library that is pulled in to all documents, so if 1 simple change is made it would affect all documents in the Library. I would appreciate any feedback.

Thanks