My measurements are slightly problematic, as I removed the pickup cover on the bridge pickup and it's somewhere in the mess of my house. I can accurately give you the widths, and somewhat give you the "heights" (direction from headstock to bridge).
Width of mounting holes:
3.25" or 82mm
Width from outer poles, center to center:
1.8" or 46mm
I measured the gap left from the pickup cover, and it measures:
1.5" or 38mm
I also measured the height of the neck pickup, which is nestled under the pickguard, and it reads:
1.11" or 28mm
Hope this helps.
If I find the bridge pickup cover, I'll let you know.
Great plan Lois! Hey, here's another idea: Ever read the bible? Leviticus 18:22!
Stewie, you're judgmentally quoting bible verses and you don't even know how to read!
Welcome to America Brian.