I have 96 LS with the b18b1 right...but my friend has a 94 4dr LS but it has a b18b that he says was never swapped and its completely stock. But in this book i read it says they started putting in b18b's into the base line integra's in 1997. Is this true? Did the older model b18b's have a different looking valve cover? Tell me im right and they put in b18b's in 94