Where can I get the rating on an older Raintite Panel. Right now there is a 70-Amp main breaker and I want to upgrade this to 100-amp. The inspector wants something that shows this panel is rated for 100-amp service. Tried a search on the Internet and didn't come up with this panel anywhere. Suggestions?

Really need more info on the panel, such as the manufacturer ,the number given sounds like a UL number, not a part number. It may be, but without a make it is hard to tell you anything about the panel.