Well i have been working on this for a looong time and it is about to be available to anyone interested. I ran out of silicone (and other problems) for molds so i ended up commissioning Tony of Tonyz customz to make the mold for me. Basically the set will consist of a box that fits snugly onto optimus prime and then a rocketpack that connects to the back piece via magnets. So this set is a double feature you get the back that oh hollow boy needed sense release and an episode 3 homage to his rocket pack sideswipe gave him to chase megatron. pictured complete is the mk1 The raw unfinished pic is the new and improved mk2. The mk2 has sharper details and panel line design on the back cover. i also improved the magnet design to hold stronger magnets I sold several mk1s to very happy enthusiasts. i can paint it any color you choose price point is 45.00 shipping is free or $5.00 for upgrade to priority within the united states. outside united states contact me. my junkion feedback is here >>>>>>>>>> updated 2/26/2010 I am now offering a kit version of the jetpack if ordered you would receave as it appears in the parts picture with 2 magnets. Kit version is 25.00 shipped Also i will be producing other resin parts soon i just bought a bunch of casting supplies. One thing of intrest will be diaclone drivers.