You don't need to link to boxddr's tutorial, it was blackaddr who came up with the transistor method. In his SMC_UTIL/ SMC_IO archives, there's a PDF file which explains it all nicely.
As for the resistors, those pictured are 10K like it says to use. I've used the same resistors myself without issue.
No disrespect bluespace but your comments are no help and just stating the obvious as i have the application and can read ive never used it but for response and help purposes was just linking the method i used to re-wire my 360 so everyone who wants to respond in a helpful way has the info i have and i dont get questions about the wiring stage of this.