I think VW/Saab/Volvo dome lights from the 80's will go in the opening for a stock LUV interior cab dome lamp. They are wired 3 way, so that you can use the switch, or they come on with the door, or you can shut it off. LED upgrade bulbs are available on ebay. I have one here somewhere, but haven't had time to test fit it.
Here's a site I've had great results with, especially for dash bulbs. Just replacing the incan's with LED's can make a huge difference in night time driving. They are cheap, ship fast and the bulbs last at least as long as the stock incandescent bulbs but run much cooler...
http://www.superbrightleds.com/
I'm also considering adding a footwell entry lamp below the dash, sort of 'luxury' car style. You can snag these off of 70's-90's Lincolns and Cadillacs and even some Ford trucks.
Guess I'm just lazy, I'd prefer to replace a bulb (with a much brighter one) or add in a couple of wires and put the lights where I want them. Good luck, whatever you end up doing.
You can take a look here too...
http://forums.luvtruck.com/viewtopic.ph ... ad+console