Hello I'm new here and want to say hello and throw out a couple of questions . I recently purchased a 2003 kia optima with a 2.7 litre automatic. The car has 150000 miles on it and hasn't been cared for very well. It doesn't seem to have much power I'm planning to tune it up and change the oil etc. Is the lack of power normal to these cars? Also I'm looking for new seats and interior does anyone know what vehicles interchange with mine .