Or you can hunt around for a cheap Unichip harness with the plugs to plug into the ecu... and whatever wires you have that can be used from the original ECu and whatever that isn't included you can wire your own.
Not hard and alot cheaper than a bulkhead harness.
p.s. you will possibly have to swap a few things sensor wise but not too bad. Will probably finish sometime this weekend will give an update as well.