Wondering if anyone knows if the 46RE and 518 transmissions share the same case?

I contacted the company (JW) that makes the Ultrabell but they say their bell only fits the 518, not the 46RE and they are diffferent animals. Other people say they share the same case.

Just wondering if anyone knows for sure - Z

 

Same case but im not sure if the 518 is fitted with the electronics like the 46re , i gotta dig a little deeper into this..

 

Do you think the electronics would make a difference or would it only be the front of the case that matters?

I wanted to use one of their Ultrabells on a 46RE. Closest thing is the 518 but they specifically said it would not work. I'd think they know their stuff since they're in the business but a bunch of people have told me they both use the same case - confusing.