[not_hans_stuck]

Packy,

In Texas if the car is 25 years old it doesn't need a smog test - only a safety test. Having said that, I'm pretty sure you could put cat's on it and leave the obd stuff in place and smog it perfectly well. Particularly if stock. I'm pretty sure a stock Corvette is a low emission vehicle. My reasoning is that if your antique Porsche motor can be made to pass a smog test, then a modern LS engine should be a piece of cake. Also, if you look at this board, there's dozens of people trying to do coil on plug conversions and efi conversions. Well, the 'vette motorcomes stock with all that, right?