Originally Posted by Markpotato
Tailpieces are meant for archtop instruments. That said, plenty of cheap flat top guitars are made with tailpieces, but they are cheap guitars.
Cheap like Selmer Maccaferri?
OP, from having done this, you will likely find that the biggest consideration is the breakover angle across the bridge to the tailpiece. Different builders have experimented with angles over the years, but if you check them out, you won't find many with an angle of less than five degrees. My Harmony Stella is an exception, at about 3.5 degrees, but it also is pretty caved in at this point.
I'd measure the angles first, if you can't get 5 degrees on your particular bass, you'll have to think carefully about adding a tailpiece in the least obstructive manner.
Another item, from experience, is that a regular strap button will be torn right out by the force of a tailpiece.
You'll need something stronger...