My 1983 has a 4.0 in line injected 6, 5 speed, i have replaced the clutch once and tires when needed it has just over 300,000 ranch miles on it, my 2005 LJ in line 6 has 175.000 ranch miles replace clutch and rebuilt the front end, tires, no engine repair on either Jeep just regular service. the in line 6 is damn near bullet proof. Rebuild the 4.0 Rio7
