I don't know if they require emissions testing in Texas or not, but if they do NOT, I make this the opportunity to get yourself a straight pipe (aka ORP). I remember when my fuel pressure sensor went bad and dumped like a half gallon of gas into the motor, and alot of it made it to the cat. Well when I got her fixed and turned her on the first time after that, all that unburned fuel melted the material inside the cat. I didn't have the extra money for another cat or hi-flow, or ORP, but I did know a guy at a muffler shop that does excellent work. He fabbed me up a nice looking ORP. It was stock diameter, and all mandrel bent tubing. I picked up a decent and very noticeable amount of power. I only spent $150 for the whole deal, and it's worked great ever since. I was living in Tulsa, OK when this happened, and I knew Oklahoma has no emissions testing. I don't know if Texas has emissions testing or not, or if they do how extensive it may be.
That might be another feasible option for you, other than having to pay for a cat (they can be pricey).
Current love affair: 2004 SVTF #953 (Josephina - pronounced hoe-se-fin-a)
RIP: 2002 SVTF #2358, Sent to graveyard on June 11, 2013. I will always remember the good times we had!!
This car made my hair go gray, and did not care.