I pulled a bulb out of a rally dash I have and it was a 156 . A 194 LED should work just fine for you. Just a note: the LED bulbs have a specific polarity,so if you plug it in and it doesn't work, turn it around.
Exactly! I just purchased them myself. My son bought me the white face conversion for Christmas and I'm currently working on installing it. I bought the white 194 bulbs.
Also they say they will work in the side marker lights but that it voids the lifetime warranty.