I don't know of anyone that is making a business of EV building in the DFW area, but you might want to contact the North Texas Electric Auto Association.
NTEAA.ORG
They might be able to point you in the right direction, or help you do it yourself.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
DIY Electric Car Forums
A forum community dedicated to DIY electric car owners and enthusiasts. Come join the discussion about electric vehicle conversions, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!