Sorry I can't provide any direct experience on this, but Nissan had several variations of the radio and climate consoles. Your LE model, which has that slightly angled right edge, leaves you with two options:
1. There's a specific dash kit for 03-04 LE models that fills that angled space and allows for installing a single-DIN radio. It also adds a small pocket under the radio. $15-20
2. Install the radio/climate bezel from an 00-04 SE w/o Navigation. This will allow single- or double-DIN stereos. If going the single-DIN route, you'll need a radio pocket or blank panel. All your bezel buttons/switches will transfer to the next one, so it won't matter what it comes with (or without). $75-$100 for bezels on eBay (cheaper at junkyard) + $15-$20 for a pocket or blank panel. See my post here:
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