Cain,
I believe Lunsford cups are 4.8mm. Many companies make these. Some have the nut at the base instead of hex on top. Anything that is 4.8 will work. Kyosho, HPI, Losi..
Wyd,
I like being odd man out as well and racing something different. Everybody at my track has B5's and they all copy each other. Love to tune and figure it out myself.
Go Team Durango. This car was so far ahead of itself. Losi and associated are just catching up.