Yes, I prefer "Tamiya-style" shock mounting.
The caps and ball ends come from the Nitro R40 and Pro3. I used a Tamiya ball nut on the shock tower and a Tamiya ball stud on the arm. HPI makes the ball studs and ball nuts (they come stock on the R40), but the Tamiyas were the only ones available to me when I first made the conversion.
Our business used to support the 415, and we really preferred this style of mounting.
I'm working on installing my electronics now...there's not much room to work with, even with my KO electronics! I'll post some pics when I'm done.