I'm looking for a helmet as well, and Rob, the partner/mechanic at Keith Craft in Plano said to go to Smiley's. I don't know if they have them in Houston/SA. The one I'll head to is near me, I think, somewhere in Mesquite- a few miles east of Dallas, right off of I-20, and 635.
It's called :smiley's racing
HOUSTON
Smiley's Racing Products of Houston
1622 Sawdust Rd.
The Woodlands, TX 77380
View map
281.362.7872
I looked at their website, and they do have helmets.
Kristen