I'm going to play a little devil's advocate here - While the Service Manager may not have any problem with the SSS, if by chance it does cause an issue, and if there is a footprint someplace that implies that you used this device, it would be up the GM to accept and deny any warranty coverage, NOT the service manager that may be on to a new job, and working for Ford when a failure occurs.
Again, I am just providing some food for thought. I don't have a fire suit, so please don't flame me !