2003 Winnebago Minnie driver/passenger seat covers

Be careful. I was looking also. Most likely as you stated you do not have the The standard E450 seats as many of the seats are upgraded for the motor homes. Most E450 seat covers do not have the slots for the upgraded RV seats with the armrests and headrests. You might try searching for "Capitan's Chair" seat covers as many of those have the holes and sometimes covers for the arm rests.