I set up I want to make.

[Manolius]

I've been having this idea to mod or form a bass with the current characteristics:

-Semi-hollow
-Fret-less (mahogany neck or ebony)
-Nylon strings
-34" scale

The obvious approach for me was to get a semi-hollow fret-less bass and replace the strings. So far I haven't found one in sale. I've been tempted to buy a fret less jazz bass and just put the nylon strings on but there's something in me wanting to try that semi-hollow sound.

Any ideas how I can accomplish that bass set up?

[Rick Auricchio]

If you're talking about non-metallic nylon strings, you're going to have to use a different pickup like a piezo. Normal pickups are magnetic, and they need steel strings.

[Manolius]

Yeah I was trying to get a fret-less semi-hollow full sized bass.
Perhaps like this one: http://bass-guitars.musiciansfriend....LAID=382168075 But fret-less and with nylon strings.

Perhaps my question that remains now if it can be done. Putting a piezoelectric bridge into a fret-less to use nylon strings. semi-hollow (preferably) or not.