I say yes, they are interchangable. Both year Optimas have identical interiors. 2001-early 2006 is the same body style.
The 2004 Kia Optima has 43.3 in. of front leg room.
The 2004 Kia Optima has 39 in. of front head room.
The 2004 Kia Optima has 56.9 in. of front shoulder room.
The 2004 Kia Optima has 55.8 in. of front hip room.
The front track of the 2004 Kia Optima is 5 ft. 0.6 in. (60.6 in.).
The 2004 Kia Optima has front wheel drive.
On a 2004 Kia Optima, the crankshaft sensor is located on the front of the transmission case. The sensor is adjacent to the flywheel.
Should be in front of the radiator
On 2003 it is the same circuit as cigarette lighter. Maybe the same for 2004.
Under the front passenger seat.Under the front passenger seat.
The 2004 Kia Optima has 16 valves.
The 2004 Kia Optima has a 5-speed manual.