Hi guys, months ago I sold my L28e from my '78 280z, with the idea to swap it for another engine, but for some reasons I decided to quit with the project and go back with the L28e. Now I'm wondering if I should install the l28e from a 280zx and still pass smog test, from what I have read here in the forum the zx l28 has O2 sensor and a couple of other things, that's why I don't know if I should use the most resent model or if I should just keep the older l28, I hope someone can answer my question, thanks in advance.