Hello, i have a g20 p10 with a low port sr20de. i was wonder if theres any engines i can swap in (neo vvl, sr20det, etc...) that will pass emission as my car has not reached 25 years yet. Also if you do know what motors can be done, it would be greatly appreciated if any other information, such as parts that need to be bought replaced or modified in order to fit the motor in, can be implemented into the response. I want to drive my lil bby!!!