hb pro diff?

[Serum]

No, they need a 1/8th FLM bulkless to use.

You can get aluminum cups for your hvmaxx with M3 screws. Since it's a rather weak setup, you won't be needing the 1/8th

You might as well consider getting the new differential cases from the T-maxx 3.3 it uses 4 instead of 2 screws. (traxxas 4980X)