Wow, you put some thought into that. Or smart just comes naturally to ya! Good response regardless. My first reaction to the question was - who cares? And I moved on. I really do appreciate how civil you guys are!Is there a reason you think that we, a bunch of rc hobbyists, can answer this question confidently? Only the owners of Arrma, Hobbico, Team Durango and Horizon can give full details. I posted the link to wikipedia, which is the source that we would get our information. As you did in your previous thread, you have asked a question that no one here could answer conclusively. I suggest you write a letter with your query and send it to Jason Dearden. He is the owner and CEO of Arrma, and the original starter of Team Durango. Please avoid asking these types of questions moving forward. Forums are not encyclopedias. If you want answers to such specific questions, you will need to research closer to the source, and not third party outlets such as this one. If you want information on how to change a part on a Arrma, assuming that one day you will own one, the forum is a great place to research this type of thing. Even then, there is a search function at the top of each page, and learning how to use it will save yourself, and the rest of the good members, a considerable amount of time. You do not need to start a new thread each time you have an inquiry. Please be more respectful of the members of this forum, as they are doing their best to remain respectful to you.