Yes, stock ls1. This is the same car I got about 13 days ago. The same car I received, all stock. But then again it could be an LS2 or LQ4. Maybe it could be my little secret. It's a Vg30DETT, 2JZ. I'm using a JDM B16b as my alternator with an electric supercharger off eBay. One of those Iac chips that add 50'hp. Lowered 4 inches with 20 inch vette wheels and your local park bench seat as my downforce. I have a Bugatti Veyron W16 as my backup engine in my buddies garage in new Rome. Btw my tires are 415-30 on those 20s. And instead of a license plate I have a parachute. I'll deploy it after 37 mph just to be a ricer. Me and Andrew Bynum have the same $20,000 body kit. The difference is he created the discount double check, and I taught him how to upload videos to Facebook.