Hi I'm new to this forum thing. I don't know much about it, let alone how to use it. I just want to know if a D15B7 motor will fit in a 1991 honda civic si (hb)? I think my head gasket blew and I was given a motor, but I don't know if it'll fit. I know it came out of a Civic ( about a '94) . I hope it does fit cause I'm tight on money before school starts.