? about the engine for a 1997 civic dx.read

hi,

i have a stock 1.6L none v-tec engine in my 1997 honda civic dx coupe.and every place i call for a engine.they give me a D15B NON-VTEC ENGINE for my car for a replacement.and i have a stock 1.6l not a 1.5L so can any 1 tell me whats going on or if there just different becouse its a japan engine.


thanks any info would help