Ace Hardware hobbies is closing. I just got a stock ninja but have not broke it in yet. I have to do that for the race in March. You know Jammin has their own line of engines that recently came out, check the powerplant section here for a link. I believe Nitrohouse has them or is getting them soon. They are Picco based. As for the OS, it's been good to me so far, I run it on my Mugen MBX5T for club racing. It did have a bearing issue, which they say is resolved but I just replaced mine last night anyway with TKO Ceramics.