Get as much as you can do, im putting one into my K plate mk2 and i got the loom ecu gearbox you will need this along with the pedal box as its hydrolic not cable need to get better brakes G60 280mm brakes (the golf i got mine from was ex 8v gti and still had baby discs lunatic) the downpipes cat / de cat as you need the oxygen sensor. i would get a loom and change it properly if it were me. intercooler pipes.. If you go ahead i can give ya a fair bit of advise.