ls/vtec can be turbo'ed all day long as long as u tune it right. just make sure u calculate the compression ur gonna have. id try to get it somewhere between 9.5 and 10:1 and u can run 7.5 to 8 psi on it all day long. type r valvetrain can handle 8 psi stock. u can probably make around 250 on it with tuning and stuff. just be sure u watch that a/f ratio and id tune a street boost at like 5 psi so theres less stress on the motor and run like 9 on race gas at the track. just ditch the auto tranny cuz it'll break real fast with 250hp. like they were sayin tho if money isnt an issue than just build a sick motor and u wont have to worry about anything breaking. the formula for turbo honda's has been laid out a thousand times over. im sure u can run consistent 12s without sleeving the ls tho.