They don't do basses any more, unfortunately. There have been quite a few transplants though. The first series (300, 500, 700 electrics, later the 600, the acoustic 700, and the 700 and 505 basses) had the original electronics, then they were revised with HD sounds for the JTV guitars, which have presumably been carried over into the Yamaha/Line 6 Standard series.
I don't know if the basses have the same electronics as the first series of guitars - all were piezo only so they only had modelled sounds, unlike the JTVs and Yamahas. I must have a dig inside my 300 and 705 bass and see what I can see. The software does detect which instrument it is.