Hello Fahim, I have been thru the build again and I didn't see any reference to the fan unit used. I did see that you used a Mega Motors 22/30/3 for a motor. I am going to order a kit sooner than I thought. But in the intrim I am just getting a good list of things to go with it. I will order all the accesories (retracts, cockpit, rivets, etc.) from you also. I am getting real itchy to start, but I know I have to take my time. I have a 450 size OH-6 scale heli that I am working on, Also I have a 28 year old PICA T-28 that I am rebuilding so I have a couple of things plate yet.