EB-3Ls came both ways: with and without mahogany necks. The giveaway is:
- anything with a middle mudbucker = maple neck, irrespective whether with two point or three point bridge
- anything with a mudbucker right behind the neck = maho neck, irrespective whether slothead or reg headstock.
From what I've seen over the years, there are definitley more maple neck EB-3Ls around than the earlier all maho ones. And of those the ones that were long scale, but not slothead, are probably the rarest. I'm not even sure I've ever seen an EB-3L with maho neck that was not slothead, I do remember an EB-0L as a non-slothead though, so similar EB-3Ls are likely.
I actually find the maple neck EB-3Ls the more versatile bass. Together with the change of the pup position and the neck material, they also aligned the four varitone sounds to one proper volume, something sixties EB-3s can drive you mad with. And the later settings sound like only one of them is filtered (the last one) with pos 1 being neck, pos 2 being bridge (which is actually useful on the long scales as the bridge is farther back, they did not move the bridge pup correpondingly, but thankfully left it where it would be with a short scale) and pos 3 is both pups.