While we were under the burb...well alright, as my son was under the burb, we discovered that the carrier bearing was shot. Another trip to O'Reilly's later and we had a new carrier and ujoint to rebuild the driveshaft (joint at the axle was good).
So with a mix of lead additive, marvel mystery oil, and 10 gallons of gas in the tank, my son fired her up and eased out of the garage for the first time under its own power (with us at least).