If this ends up having the same wheelbase and track width as a Slash 4x4, then it will be nearly identical to the Kyosho DRX. The HPI WR8 is much smaller, as it isn't much larger than a standard 1/10 scale touring car.
Ofna Hyper 10SC next to Kyosho DRX
In the video below, he shows the size of the WR8 next to a 190mm rally body and a 1/10 short course body.
http://www.youtube.com/watch?feature...&v=CnQLE1mWYsU
Personally I think this would make another fun spec class. I just hope Traxxas makes some licensed bodies as the Kyosho bodies are hella expensive.
-melon