Quarter and Sheet Panels Installation Advice

Try google.
Ospho Rust Treatment - Since 1947
Im not familiar with the eastwood product. If it is phosphoric acid its the same stuff. Lots of different brands, all do pretty much the same thing. Ospho has been around a long time. I first heard about it on Barges and Tugboats. Guy gave me a 5 gallon bucket of the stuff and I have been using it ever since.