I went to Odessa, Ukraine last summer and spent some time in the automobile parts stores and the radio parts stores. I was building transitor ignition systems for guys still running points, and wanted to buy 15A, 250V PNP transistors. The electronics shops had tons of huge resistors that looked just like the green ones you've showed at your site.I expect they would work just fine. Just be careful of the inductance. Some of them look like wirewound resistors. Run a high frequency through them and see if their impedance changes, to be sure.