i found right way to tweak and upgrade ur dell streak performance by not installing kernel.
1.extract update in a folder.
2.root ur streak.
3.download root manager.
4.mount internal storage as R/W.
5.copy and replace all the files in system folder of performance fix file to internal storage of dell streak>system.
6.reboot ur system.
7.i done like this and getting 30.28 on neocore and 1818 on quadrant.39.66 on linpack