if you have a comp ride that hits that all day and higher... why the hell are you asking us for box size help/info? seriously. I am at a loss of words for this statement and would like a valid answer.
List equipment etc, post some pics.. surely you'd have at least one pic of it on your pc or uploaded somewhere.. what's your competitor name? what organization so I can look into it.. minds want to know.
some people can build very impressive burp vehicles... but when it comes to a DAILY ground pounder.. not all can design a box for DAILY ,even if they can build a 155+ burp vehicle