^ how it can be a b16 integra ef? ef is the chasis code for the jdm 88-91 civic hatch. as i said before it had to be swapped in and much more no 90 and up integra came 1.6, they were either 1.8 non vtec or the 92-93 usdm1.7 gsr vtec. the only way a integra would have came with a 1.6 vtec motor is if it was a real deal jdm car that was the integra xsi then that car would have been right hand drive along with all of the jdm goodies. so once again if it is usdm that motor was swapped into that four door with a auto tranny.