There are currently no build centers dedicated to the construction of the TremorMUV base body.  Your best option for getting a TremorMUV built for you will be for you to purchase the complete plan set(s), and take them to a local welding shop.  They are best equipped to handle your professional welding needs if you desire to have someone construct the body for you.  You can likely save yourself some money if you utilize the cut list drawings in the plan set, and provide your welder with the pre-cut pieces.

Check with local welding shops to find the one that will satisfy your welding requirements.