Chosen Solution

Do I use the HDI-30 port?

Sadly, you’re between a rock and a hard place ;-{ Apple never offered external monitor support for the older B&W displayed Powerbooks. There was a company that made a SCSI (HDI-30) to composite video device but it was a flop! Here’s your systems ports

Apple updated the 160 with color with the intro of the 165 which offered a Mini-15 display interface. I don’t think you can find the needed cable for it. And here’s the 165c ports