I wish you the best of luck with your endeavor, but refers with a porcelainized metal liner are extremely difficult to find in the U.S., and I would imagine that finding one here would be even more difficult. The last refer/smoker I had was made in the late 1950's!
I agree with dafish, going to be extremely difficult to find. Very few Filipinos had refs 40+ years ago. Larry
Yup. Instead of a refer you may want to look for a bakery rack and enclose it with sheets of aluminum or stainless. They work great and usually end up holding well over 200 pounds of meat.