does the kb45 8xl need the rcm clamp

[suicideneil]

It is indeed a matter of common sense. The dimensions above are accurate, so it will be obvious if any given pack will fit or not (a 30mm high pack will fit (just), a 31mm high pack will not).

This aint the traxxas forum anymore, a little more free- thinking and experimentation is called for to figure out ones own questions, especially when they are such simple ones.