Alright, so here is the list of things to check for:
1. Memory speed and part numbers for the video memory
2. PLL model name/number for the CPU
3. DVD Drive information, look to see if it is compatible with the one on Newegg.
4. Pictures to try and determine the board differences between the 9300 and XPS2 (I hope I can do this)
To answer Luology's questions:
1. Sound, its great the best I have heard from a laptop.
2. Wireless, the 1450 card is awesome, the antennas are routed to the top of the LCD that gives it great reception, again much better than my M60 and on par with the 9200.
3. It comes with the typical Dell software load, I plan to reinstall clean.