Me too, very interested in the 05R.
As for the R40...it's sad that people are still too stubborn to accept it into the "League of Extraordinary Nitro Sedans." Hara had a one-way and lightened chassis and some different gear ratios. One thing that people fail to mention is that some of the fastest modified engines in the country were at the ROAR Nats last year and Hara won with an off the shelf NS12. Not that it's a shabby engine but the car was good enough to be driven by one of the Worlds Top drivers with non-modified engine and it won. Plain and simple, there are very few people on this forum that can drive beyond a car's capabilities. Buy the car that you have support for.