Don never heard how the test drive went? As far as grounds some others that you did not mention are, copper braided strap from frame to body mount cage located on the passenger side rear of the engine compartment. The ground wire from the negative battery wire clamp at the battery to the inside edge of the passenger fender, they are all important but this one even more so. Also there is a few wires grounded to the radiator support on the headlight side near the battery.