Based on simple math calculations(which i have neither patience to provide nor calculate and i just woke up) you can see the horsepower limitations of the stock turbos and fuel system. What if you did have a fuel system that could support a t04r but youre on the stock twins? Well, look at the compressor maps for the stock twin turbo. Actually, let me stop saying twin turbo since the 1JZ is the only engine with true twin turbo. The 2JZ is sequential and not really suited for drag. Anyways...the CT12? Yeah, im not even going to go there. Sure the CT12B has a steel wheel, but you cant boost it up that far. I could see 13s on relatively stock and 12s with cams, full exhaust, fuel upgrade and a nice tune. The only way i could see 10s with stock turbos are if they are in the back seat distributing out some weight. It might be possible for someone to do it, but i have no idea how they would.