[WoZZeR999]

You can actually use the RHOD210 one (or any of them for that matter). The only real difference between them is the keyboard mapping, and 400/500 use htc_hw.force_cdma=1. If you just want to test, the RHOD210 (T-mo I think) should be fairly close. Close enough to test out it booting and finding out what breaks.