RN65

I know this is an old thread, but I feel bad and wanted to offer some info to you folks: the Dolphin in my backyard has a Toyota FF dually rear axle. The good news is that this axle uses the ultra-common 8" third member. Therefore, you can re-use your gears from any other Toyota 8" rear end; you just switch the entire third member assembly- you don't mess with the gears themselves. I suspect yours are the same as mine.