I did bounce a few ideas of the 1/12 forum guys but there is so much going on in there it was getting lost. What class do you guys prefer to run? Mod or 17.5? Also, is 17.5 Spec and "Blinky" the same thing? I have been trying to google the ROAR info for these and it doesn't come back with too much information. Does the HW1s allow you to race both classes just having to change the motor out? I am looking for some adaptability without having two different cars