Looks good! Glad to see others seeing the potential of the fj60/62 axle. I have parts to build one here shortly for my next family crawler. Can't wait to hear how the spartan works for you in the 9.5" I have one as well as a Detroit for my build.
They have potential. A little weird to work with as they have some unique issues, like the driver side/perch and it being spring under. But yeah i'm excited!