what i did was to goto a local autospares with a bulb that had blown. they didnt have any in but the guy took the old bulb out and replaced it with a new one 12v 5w (in the old plastic grasp). I did the other bulbs myself like he did in the shop. Before I went there I went to Halfrauds and they laughed and told me it would be a scrapper to get one, but anyway I dropped on a good shop who knew what they were talking about.
Its really dim. You can see the blue with the blubs but its not that good. i.e you only know the lights are on when its really dark. The needles glow blue a treat.
The dash is a s**t to get off. There are the 5 screws on the top of the dash, 2 on the dials, 3 on the steering column and 2 under the dials to get them off. If you havent done it before I'd make sure you have a good couple of hrs daylight left before starting, so you can figure it out.
I havent had the chance to look up reflector bulbs/leds yet so I cant comment, but I hope they would be brighter. Or maybe replace the fliters might make it brighter cos they are naturally orange. I'll replace them with reflectors next time I have to take the dash off.
PM me if you want any more info.. c