Basically all you need if the Harness thats it. Its a little pricey because it is straight off the boat from Japan, has only 41k on it, Stage 1 port and polished, and has been serviced every 3000 miles. Also has not been drivin that hard. I am pretty much thinking about parting the Lude I have now and buying a 240sx. I just bought and RB26 Dett from Japan, yes the skyline motor, with tranny and everything and I am waiting to sell this lude stuff to get it into the car.