I have a 1991 civic ex d16a6 I want to swap for a D16A8 I know tranny and ecu will be the same and the egine will bolt on like stock I want know what mods will I have to do to make it work since I know that the thing that's next to the distrubutor will be rerouted to the distributor also the engine I want to buy is from ebay a friend told that it won't pass smog in california since its a japanese engine can someone help me plz

 

Creating a more detailed thread title may help - title edited.

 

Thanks