I dont really follow speed run stuff. I've seen Talbot's 1/7TH scale custom Arrma Limitless, and a few videos of the guys overseas, but that is about all i know about speed run stuff.
OK, i have to ask. Where did you see a 180MPH 1/10TH scale. The fastest 1/10TH scale i have ever seen barely hit 120. If you want 160MPH+, you need 1/7TH scale, like the Arrma Limitless and Traxxas XO-1. To get to those speeds is neither easy or cheap. Look up Kevin Talbot's speed run attempt...