JB,
The link below will take you right to the grass carp permit:
http://www.tpwd.state.tx.us/publications..._grass_carp.pdf I had another thought to throw out for your consideration...and I've never been able to do this myself because of lack of patience...the thought being to wait another year or at least until fall for the predator stocking. The theory behind the wait is to give your forage chain a chance to really develop before you bring in the predators. DD, on this forum, frequently advocates a pond environment where the forage is so numerous, the LMB only has to open its mouth to feed. I only wish I had the patience to take the time required to establish that kind of forage base. If you have that patience and can wait, the long term benefits may be worth considering.