Ihave seen the mid tank mod somewhere on here I believe. If not Ihad googled it and saw it done the battery and reciever box is enormous so it would easily work. However, I am unsure how to do it! If you figure it out let me know bc I am interested in doing it. Also why do they mount the throttle servo on the side? It appears that it would work as is? I want to make it so both sides are open. Idont know much about the rear exhaust as their performance etc and if they are worth the money? But Ilike the idea!