From Labella:"
Thanks for your email. We only make our "through body" sets in standard long scale. We apologize for the inconvenience.
Regards,
La Bella Strings"
The La Bella "thru-body" version has extra length added at the ball end to the standard "long scale". So, as long as your bass is 34" scale, the "long scale" should be long enough as long as they're the "thru-body" version.