Kenneth,
Is that Truckstell unit for an enclosed driveshaft or for an open driveshaft? I know almost nothing about Truckstell units, except that I have a closed driveshaft Tip-Toe-Matic unit (from a car). I cannot bring myself to cutting the torque-tube to install the overdrive.
Please let us know how your installations proceeds (with photos, if possible).
Good luck & Thanks,
