i'm currently in the process of doing the same, only with all red LEDs. so far, i've replaced all the easy ones (courtesy lamps, map lights, gauges, etc). i've also set up some custom white leds to serve as actual reading lights because the reds aren't quite bright enough to use as reading lights. Within the next month or so i'm going to start tearing into the dash to replace those lights. if you're going to be replacing the speedo bulbs i can send you a pic of that panel to give you an idea...you'll need some kind of holder though. i don't know how much you spent on your leds, but if it wasn't too much, you may want to consider buying the premade led setups that use the stock bulb sockets---that's what i'm doing, it takes a lot of the headache out of it---
i dug into the dash far enough yet to really get an idea of what work is involved, but as soon as i do, i'll let you know
