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When purchasing aftermarket items, for a b16a3 engine, do you look to buy for a SI engine? or is the parts needs to be fabricated a bit. I'm not sure if (for example) intakes for U.S. SI's will fit a jap version SI. having a hard time finding the specs on the whole engine. Because i plan on putting a b16a3 into my civic ex. and once i do that i want to make sure any aftermarket parts that i put in it later, are the right fitting. answers are much appreciated.