Yeah, that's what I was thinking...I highly doubt that their would be a significant difference between the two years as they are identical cars outside of the different looks which still just amounts to about the same difference. '03 has a slightly shorter hood but more front bumper heft. '04 is just the opposite...slightly longer hood but less front mass, it's all relative.
I think when the options between the two weighed vehicles are identical....it's all gonna be the same. We really don't think Nissan is going to really put some real effort towards weight reduction here do we...the changes that have been made were made to keep Nissan out of more financial loss due to poorly performing parts, that's it.
The cosmetic changes were made to just try and look fresh and keep up with what other companies have been bringing out.