If you are going the Ebay route, make sure to ask the seller if either of the airframe tubes are damaged. There have been a number of the Leviathan kits (and other PSII) on E-bay recently, and I can see that some of them have a lot of end damage or creases mid-tube. I always ask the seller directly. You will be paying a premium price on E-bay and still ordering the spare parts from Estes if they are damaged. I got a couple sets of the tubes from Estes, and the plywood centering rings and motor tubes from other suppliers. I did find a 3" ogive nose cone at Apogee that fits but it's a little long. AC Supply still has the Big Daddy, which would provide the correct nose cone and I think the fin can tube. You can also get the motor retainers and nylon chutes from AC Supply at a good price. And use 1500 pound Kevlar for the shock cord instead of the elastic. Get a small U-bolt to attach it to the forward centering ring. I am going to clone a couple of these after losing my kit-built one in 8-foot corn.