The RadioDaze part no. is HX124A, $13.26. HX124C is just the coil that you might be able to fit onto your existing iron if the core is 1/2" square. AES has comparable items.
These are 1:3 xfmrs. Should work fine for either of your needs.
:What are the correct replacements for 1:3 and 1:5 ratio audio transformers from AES or Radiodaze?. I have a couple early homebrew sets that have open windings and cant figure out which ones I need. Thanks a million for any help.
:Paul.