Looking to use some SD P90 rails in a build and came across a vid as part of an Epi upgrade that gave quite a few pickup combos.

4 pot setup with two push/pull volume and three way switch
With both volumes down standard humbucker
Neck volume up single coils
Bridge volume up P90s
Both up humbuckers in parallel
Three way switch acting normally.

Have no idea on how this could be wired : descrition toward end of vid

https://www.youtube.com/watch?v=4DzPb0wbFEA