ok so when you get the motor and all that, you shouldnt need anything. you use the accord motor mounts, accord axles, accord wiring harness, and if it is jdm motor you have to use your accord fuel rail, and accord intermediate shaft. as far as wiring, all you have to do it run a wire from the knock sensor, vtec pressure sensor, and vtec solenoid from the sensors to the ecu, if you go online you can find what pin each of them goes to.
recomendations: do water pump, timing belt and tensioner before you drop it in, as well as a new clutch....i made that mistake on the clutch at least