Thanks Airon,
So if it meets emmisions is it still illegal cuz of the vin code thing?

 

all depends on your state
here in cali it can be done, but then it all depends.......
you should be using all the smog equipment from that same year engein as your car
but then a lot of people in the mid usa and eastern states pass with jdm motors cuz i guess people there dont care

 

I live in MD, anyone know what the laws are like here?

 

do some research. you can find the laws for your state easily.