NH rules for oversized vehicles pg. 30 no mention of maximum size, just minimum size.
maine rules scroll down to section 4.3 #2. once again minimum size is stated, nothing on maximum.
good luck! how oversized is it?
[edit] maybe you should look into the placarding issues. if i remember right, the escort vehicle has to be placarded with oversize signs. seems incongruent to me to placard a normal sized load. [/edit] :wink: