On Ben Heck’s forums, this modder shows how he managed to cram an Xbox 360 wired controller inside the shell of a PS3 Dual Shock shell.

This mod is done with the PS3 board (original version) stripped of almost all of its parts and the controller’s daughter board kept intact (mostly) and the CL board cut to about the size of the battery in a PS3 controller.

3PS60 Controller, Wired 360 controller in PS3 shell