Las Vegas? Just moved back here about 2 months ago, used to live here when I was younger, and finally got back. I've talked to a few cops about engine swap laws, but sometimes I'm not too sure if they even know what they're talking about. Does anyone know what the laws are, or know a website that has them? The cops here told me that any swap is legal, as long as it can pass smog. Also, how do the smog tests here go? Are they just a sniffer test, and no under the hood? I know California is a pain the ass to get through smog, so I'm glad as hell to be here, so any car law here is definitely going be less stringint(sp?) than Cali. Thanks for the help if anyone knows. BTW, I've searched google, but I just can't seem to find the right law website to locate the info.