Well once again Printrbottalk.com has inspired me to do another mod.
Here is the Printrbot Simple 1405 dual hotend mount. This is designed for use with Bowden setups like the E3D.
This part mounts to Jon Lawrence's Y modification. I don't currently have a second E3D so this will be a WIP until someone uses it successfully.
If you want to discuss this mod, check out this thread where the idea came from. http://www.printrbottalk.com/forum/viewtopic.php?f=21&t=8526