Where can I get additional seat belts installed ? on 2009 Ford E-350

I have a Ford E 450 that makes up a 28ft medal van. I want to install additional seat belts on the bench seats that are behind the cab. Where can I get these installed at a reasonable price in the next few days?

1 answer
This is a tough one, I would try the local Ford truck dealer and see if they have a recommendation. The Ford Truck dealer knows what companies address these truck modifications and hopefully can help.