All Metal/new Suspension/4×4/dana Axles /232ci I 6 You’re in the Army now, you’re not behind a plow…you’re digging’ a ditch you son of a bi#@h, you’re in the Army now! A theory connects the term with Ford’s nomenclature of GP, its military reconnaissance vehicle. Just like HMMWV became “Humvee,” perhaps GP slurred into “Jeep”. Although...