Can 4EXT flash any ROM (eg. Gingerbread)?

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http://forum.xda-developers.com – I've just recently done S-OFF and installed 4EXT recovery plus the latest ARHD ROM. However I'd like to revert back to a Gingerbread ROM. Preferably a custom one. Just wondering if 4EXT is capable of flashing any ROM or is it only compatible with the newer ROMS like ICS etc? Could somebody also recommend a good Gingerbread ROM if possible? Thanks. (HowTos)