kurt Cobains unplugged acoustic guitar

[walters]

What kind of pickups did kurt use on the unplugged acoustic guitar?

how can i put guitar pickups like these on my acoustic guitar?? and which ones please?

 

[Big Kenny]

The MTV Unplugged appearance was done with an
acoustic/electric Martin guitar from the late 50s or early
60s; perhaps a model D-18E ("E" for electric) or a D-28E.
Its a right-handed guitar; the pickups (DeArmonds), control
knobs and switch were stock, even though they look like a
home-brew job.