FYI for anyone looking: re-shelling a v1 controller with v2 innards is possible but incredibly time consuming. My 20th anniversary controller died (v3 circuit board) so I transplanted all parts from a PS-Pro controller. It requires lots of cutting and trimming of the shell to match the inner profile of the newer shell to enable it to close up cleanly. There are no cuts or modifications needed to the V2 controller components however, but the new style light bar need migrating across.