More redundant stuff since you already have an Electric Vacuum Pump.
I ordered the below double Diaphragm Vacuum Pump from an eBay Seller. It is made in Germany.
Ford subcontracted a small Electric Delivery Truck from another Company that went Bankrupt. These VPs are surplus from that.
I don't know if there will ever be a repair Kit available for it unless I can identify the company who made the VP.
This VP was made from the onset to be a Brake Booster VP.
I figured the Diaphragm Pump is not going to over heat like the Hella vane type Vacuum Pump did. I was hoping it would come with a Vacuum Shutoff Switch Built in but there is none.
Don't know when I will get around to trying it. The eBay Seller
Ford Continental Electric Vacuum Pump 12VDC Ford A426C | eBay
Here is the article on the electric Truck:
Azure Dynamics Bankrupt, Built Ford Transit Connect Electric
The parts with the Red Line on them are actually Mounting Bolts you cannot see the other 2 but there is a total of 4 of them.