Not knowing the internal structure of the fuselage, you could be right. It all depends on what's located where. It might take major modification to electrify this bird.

I don't know if it's possible, but maybe the batteries could be put in between the cowl and the front of the center cabane/support. But only if the batteries could be "stood on end". The hatch would be smaller, the batteries would have to be appropriately sized... This'd be tough too.. But maybe.

Again.. You'd really have to have the plane physically in hand to look at before you could determine what's possible.