So, these ARE #74 bulbs... BUT, standard #74 are just 1.5watts. I'm pretty sure these are the higher 2.3watt type. If you put in 1.5watt ones, the ring will be pretty weak in the day time... but on the plus side, you'll have white/blue at night. I'm deciding at this point whether to try it, or retrofit the CCFL rings I have. On the other hand, the LED type you find are highly directional so they won't do.