The San Marcos and Lockhart locations of NAPA Auto and Truck Parts were bought by Sean and Petra Mann, two Texas State University alumni, in January. The new owners will host a grand opening at the San Marcos store, located at 523 S. Guadalupe St., San Marcos, on April 2 at 8 a.m. The event will include food and door prizes. 512-392-6611. www.napaonline.com