I did a bit more digging. La Bella made a custom Starcaster set designed with a 33'' length. Eeek! I've purchased some Fender flats. They were cheap enough, and I can use them elsewhere in the estate if they don't do the job. I've gone for a 45 - 105 set.
The Starcaster arrived on Tuesday. There were a couple of crackles in the electronics, and a loose output jack, so I've stripped it down. I plan to upgrade the wiring with CTS pots, Switchcraft jack and switch and coax hookup wire. I'm impressed with the WRHB reissues, as visually they are a very close match to the '70s original I had kicking around for a couple of years. Far less microphonic, thanks to a wax potting job. Having said that I'm considering wiring the bass with the coils of each pickup in series, as in series the pickups are dark, though nicely powerful and consistent in tone.
Definitely a very cool looking bass.