I might add to my earlier post that the hitch is that you need to find the right 5300 screen. Most 5300s were passive matrix/ dual scan models, and (with the exception of the 5300ce with its 800x600 screen), the screen you want is scattered around among relatively few of the others (the 5300c, and the 5300cs). The LCD in question was also sold in the 90s as an official Apple upgrade for the 5300, so there may conceivably be new screens still in boxes somewhere.

The upshot is that a little digging through specs is necessary, though my advice is to be thorough, and especially to go to and through the archived Apple documents, as some of the usual sources (e.g., LEM) are simply inaccurate.

There was, in short, a 640x480 active matrix screen available on the pb5300, and it is that one that you want, that you really really want, if you're going to launch yourself into this particular 68k powerbook hack. I gather that the higher resolution, 800x600 screen will not work properly as a transplant (mind you, I have not tried it) because there is not enough vram on the logic board of the pb190. VRAM had been doubled on the 5300ce logic board to support the higher resolution screen.

Dual scan displays from the 5300 series will also work, but they are the poor cousins - and they are already on the 190cs anyway.