Yes, the full Windows version it would be possible to get a lot of information except vehicle speed. Here is a user of ours that used the Zeitronix sensors to get engine RPM, oil temp, AFR, and some other data in a custom dashboard mounted in the vehicle using DashCommand (username audisnapr):
http://www.youtube.com/watch?v=Zn8fdzTKxDg
http://www.palmerperformance.com/for...11580#msg11580
PLX sensors would also allow you to get all of that information, but PLX doesn't have an RPM sensor to my knowledge.