The 4 "speedup" updates can be downloaded using WPL in a similar way- browse to the speedup-updates-do-not-integrate folder.
Then Menu>Import>Update list and browse to the speedup-updates-do-not-integrate-vx86.csv file. Click Download.
That speedup folder can be copied to the mount folder before unmounting the image. So they are there , ready to be run after installtion.