Thanks to MyNameIsMudd I have have a pair of engine guards!
Here are a few pictures of the process to strip and sand the rust, JB weld a few holes and get started painting. I have some welding to do on one of them so it will be painted later.
First, one of them that has been soaked on one end in a diluted Jaso Metal Prep and water solution. It is available at Lowes and contains Phosphoric Acid. You can see how much is cleaned off half of it.
Second, more soaking followed by wire brush scrubbing and more soaking. Repeated a bunch of times, plus sanded with coarse sandpaper and soaked some more...