AFAIK, there's no way to get a standard 60Hz VGA signal out of the Vampire Video Victims for use with a fixed sync VGA Monitor or LCD. Gotta find a good multisync display or go NuBus, but early NuBus cards were almost uniformly 60Hz VGA hostile as well.

IIci supports:

12" Monochrome

13" RGB

Portrait

.  .  .  or that's what GttMFH2e specifies.

LEM: adds support for the 12" RGB's 512x384 @ 60.15Hz*****

gamba2 adds Multiple Scan 14 & 15 support for the IIci & IIsi to the list, but only with third party adapters. (Sync on Green silliness?)

*****60Hz fixed freq. VGA Display might display something at 512x384, but the input for the 12" RGB Display is 60.15Hz, so the IIci's output freq. would be out of sync for most practical purposes, or so I would think.