legality issues

Ok, say you put an sr/rb engine into your 240 and plan to drive it regularly. Is there like a certain permit you can get that allows it? If not, in what situations would you be at risk of getting "in trouble" with your car,and what's the worst punishment that they can dish out?

note: The cops around where I live are viscious. My friend was pulled over last week and cited because his headlights were too low.. and get this: they were fog-lights... the police didnt care because his dim lights were on, and he said he would make no differenciation between the two types and they were all considered headlights. Luckily, the only thing they can say about what's under your hood is that you have a modified intake, since they probably know more about wild cow migrations than imports,but incase someone did....

"For off-road use only"

Originally posted by ghostchild316
"For off-road use only"

I bet thats the most hated phrase for aftermarket consumers