Yamaha BB300 purchased new in 1991.
Not mine but it looked like this:
I still have it, though it's unrecognizable these days. It was a long running experiment in "upgrade".
Pearly white paint was stripped off.
Pickups were replaced with an active Alembic PA/E1 set.
Bridge was replaced with an original Badass I. Not a II or III, a first gen Badass designed for new construction. So tall I couldn't get the action low enough to be anywhere near playable. Since it never occurred to me to shim the neck I routed a pocket in the body to set the bridge into.
At this point it was nearly perfect. My guitarist described it (positively) as "The sound of god farting."
Of course being young and stupid it got updated further. A gizmotron and was bolted to the front, followed by thumbrests in various locations, then all of the above removed, leaving it full of holes.
I went off into the standard path that basses needed more "flexibility", more knobs, more tones. I've owned Alembic, Fender Jazz of American and 90's MIJ origin, 60's era gibsons. I've seriously evaluated Pre-Gibson Tobias and Pre-Cort Curbow basses, as well as Chapman Sticks. All because I had to have "flexibility".
Then I realized the simple truth of "freedom from choice" and came back to the P-Bass. Currently playing an Affinity P that's been upgraded to quality hardware.
The BB300 was my first and it's about to be my main AGAIN. I'm repainting it, probably ReRanch "Gorilla Vanilla." I simply need to figure out how to re-fret my awkward de-fret job I did in anger years ago.
After everything I've touched over the years, it's still the best, most comfortable bass I've ever played.