Good question!
We know the Gibby pups can fit with the plastic shell removed.
However, the Eppi pups are longer with the shell ON at 3.84” x 1.50” than the Gibby pups with the shell ON. So it’s easy to assume (as I did) that they will be longer than the Gibby pups with the shell off as well.
We know the Chrome covers will fit over anything less than 3.63” x 1.57”.
At first glance the Eppi pups look like they’ll be too long even with the plastic wrap removed…
View attachment 4579028
However, when you flip the pup over you’ll see there is a significant air space on each end before you ever get to the epoxy surrounding the windings….
View attachment 4579025
So theoretically, if one were to remove the plastic casing material from the two long sides of the Eppi pup they would free up .18” for a new width of 1.32” (that’s less than the 1.57” space in the chrome cover -
so it fits in that direction).
Then if you remove the .325” of air space and casing on each end of the pup you free up another .650” in length for a total new length of 3.19” (that’s less than the 3.63” space in the chrome cover -
so it appears to fit in that direction as well).
Another consideration would be the mounting screws. Eppi uses three (two on one end and one on the other) vs the chrome covers only requiring two screws. The chrome cover screw holes are 3.3” apart, which should just clear the epoxy cover,
so I think you’re close but ok there as well.
The final consideration would be, do the trim rings fit on the center block and cover the original body routing? The Eppi body route is virtually the exact same size as the outside length of the chrome trim ring.
There will be zero room for error but it will JUST cover the route length. It’s fine on the width. Unfortunately, that means that the four corner screws of the trim ring won’t have any body top wood to bite into.
You’d either have to glue some small blocks of wood in the cavity or use longer pup screws vs trim ring screws.
Bottom line, it can be done with finesse on the plastic shell removal and the trim ring install.