Here in the peoples republic, I mean Cali all '73 and older cars are exempt. No matter *what* engine thy're running. Thomas Fox '93 NX2000 Wish I had a 5-Dime Bruce.Hearn@cd-tech.com wrote: In Texas, emissions requirements is predicated by the engine, not the car. A 510 with a SR20 would need to meet at least 1991 specs. Is this different from other states? BiH