I have done this three times on my Range Rover. I ordered the bulbs off ebay. I'll tell you, they look great when they are working, not flickering or burining out. They don't last very long at all, that's for sure. On the dash, a fault code does show..."Check nameplate light." For only a few dollars, I think it's worth it to buy them.
I purchased the park lights with built in resistors, these work great!
Link: http://store.ijdmtoy.com/European-Car-O ... s-s/57.htm
Description: Error Free OBC T10 LED bulbs
I have ordered the license plate LED's also with resistors, these are the festoon style bulb.