This is slightly tangential and I'm new here, but I offer my experience with late-'80s MIJ Fender guitars in case it is helpful.
I bought my first MIJ Strat new in 1987. I bought an identical guitar three years later. Build years were probably 1986 and 1989 respectively. They were both fantastic: very well constucted, with some of the tidiest wiring I have ever seen. At least as well built as the early-'80s US Precision I had at the time. I was distraught when I lost them.
The only difference between the two Strats was tonal, and it seemed to be down to the wood used. Both sounded good, but they did sound quite different through amps, played unamplified, and especially when I rapped the body with my knuckles. Possibly it was just chance that the differences were even noticeable. If the basses are like that, however, the inherent sound might vary quite a bit from one example to another. If it were my money, I'd want to be comfortable with how it sounds unplugged as well as amplified -- and, if satisfied, I'd be extremely optimistic.