Dual mod HRAP3 >XBOX360?

I just ordered a HRAP3 and plan on selling my HRAP EX. I’d like the HRAP3 to work with my 360 as well. Soprry for posting a new thread, but search was acting screwing.

I have a Madcatz pad that I can use for the PCB, and I sorta know how to solder (I’ve installed mod chips in my PS2 and orginal XBOX). Is there a guide somewhere? Do I solder the Madcatz PCB to the HRAP PCB or do I need a Cthulhu? I’m looking for the easiest way. Also, if I install some sort of switch is possible to use 1 USB cable out to the console?

Thanks in advance

I would aslo like to know if this is possible.