I have a Greco II Tbird and a Greco IV Tbird and they do in fact sound different but I chalk that up to mostly the different strings they wear. If there is a difference between an equally outfitted II and a IV it’s probably subtle. One bass that it could possibly make a very noticeable difference on would be the 2015 Tbird with the monster magnet pups, that’s the only bass I’ve ever owned where you can easily pull the strings completely out of intonation by raising the pups. So getting rid of one of those pups might actually change the overall movement of the vibrating strings.
Looks beautiful! Congrats on the new bird!
…and not just any old Gibson, but one with the same style of pickups that the 2015 Tbird uses.
I’ve always considered most rosewood fretboards as unfinished and therefore in need of occasional oiling to condition the board. I would have assumed the Dunlop 65 lemon oil would be ok to use on a rosewood board as long as you wipe it on and wipe it off. To be honest, I’ve never used that brand before, so if they say don’t (even though I can’t imagine why) then I wouldn’t, but I would find a fretboard conditioner that is compatible with unfinished wood, you’ll need to eventually condition that board.
^This!