gsr b18 into 91 civic dx

if i wanna do an engine swap with a gsr b18 into my 1991 honda civic dx hatchback what all do i need? and where would i find the harness for this engine?

go to the 4th gen forum and look at the swap sticky..itll tell you..and youll learn more by searching on this forum than anything..the bseries swap is pretty much a common one now and theres even guides on here thatll tell you what to do with pictures.