In the past, the kit sensors have not been available for purchase, which is part of the reason we've never used them. My guess based on the where to get more spreadsheet, that the same thing is true this year.
You can get similar gyros from sparkfun:
http://www.sparkfun.com/commerce/categories.php?c=85, or with a little more work you can use a analog devices evaluation board. Last year we used the Analog Devices ADXRS610
http://search.digikey.com/scripts/Dk...557&k=adxrs610