If sanfblasted, you should be able to get aweay with one good coat of 2k primer(epoxy) Then topcoat.
I like colorful machines. Check out my Fairbanks , pinstripes and all
It come here Osha green. I just freshened it up and did the striping
You can build a serviceable burner with fittings from Lowes, Home Depot, local hardware store, etc for under 20 bucks. Add more for the regulator, needle valve, hose.