Need 240V in the shop, is it already in this OLD panel box?

run 1" rigid air supply from the original 220V compressor location out to the barn. would give you that much more capacity and would allow you to wrench in solitude, no compressor noise over the radio. Could tap it to a few locations to allow multiple hose angles and get you a moisture sump (just run a vertical run to the ground with a drain on the end)