[Topless]

Definitely not "Smog legal" in Calif. It might pass an inspection by someone who doesn't look at em but the CHP won't let it fly. No knowledge of TX smog rules for street legal cars.

From CARB:

"A. Catalytic converter falls under California anti-tampering law. The law is designed to prevent tampering with pollution control devices on California vehicles. The anti-tampering law is Vehicle Code Section 27156 and covers all pollution related systems and devices on a motor vehicle. A violation of this law may also include a parallel violation of California Business and Professions Code Sections 17200 and 17500. Judges usually impose penalty based on the severity of the offence and whether a repeat offender is involved, and a fine of up to $2,500 for each violation may be assessed, as well as some jail time."