Well I've knocked together a comparison.
Left Channel is the 2002 Stereo mix (Not stereo any longer).
Right Channel is the original 1963 mix.
1. The two themes
do go out of sync eventually. I haven't attempted to correct that, as I am leaving it as part of the comparison.
2. The part that Danny mentioned, when Mark used the wrong bass intro part, is at 1:02. You can hear a jarring difference between the two channels.
3. You can hear clearly that in the 2002 mix, the white noise effects are out of sync with the rest of the mix, and are also quieter than in the 1963 mix.
4. If you are listening to this with Windows Media Player, (I use Winamp) then remember to turn the SRS Wow effects off. They only interfere with the comparison.
5. There is a slight chorusing near the beginning of the track. This eases as the two channels gradually drift out of sync.
Here it is:
Comparison.mp3