anything thats rated for a 2.0L engine mostly. the 1.8 is a little smaller in engine size. so i they might fit im not sure, but stick with the 2.0L. just get a cheap one off of ebay and put on a good filter. the filter that comes with teh ebay one really suck. its really simple. just take out the stock intake box, pipes. put on the rubber pieces to connect each piping to. put clamps on the rubber pieces tighten them. and then put on the filter and maf box( i think thats wat its called) the black box in teh picture above, between the 2 intake piping. and put on the filter. its that simple. most the time it can be done with a screw driver.