Originally Posted by monicle
only illegal depending on where you live. most places its not.
It's illegal every where, it's a FEDERAL law. You CANNOT put an older engine into a newer car. It doesn't matter what state you live in, whether or not your state has emissions. Even if your state doesn't check for it, it doesn't mean that it's legal. It's illegal everywhere in the United States. It's governed by the D.O.T.