Theres people sell everything youll need for 500 out of a doner carThen its upto you what you want to changeA downpipe will set you back 150 unless you can weldExhaust is what ever people chargeKntercooler ans pipe work 200ishCambelt kit and water pump 150Clutch (solid flywheel conversion) 200ishWiring your time and patienceYoull spend over 1000 unless you buy a full 1.8t and use what ypu need and sell the rest pluss the bits of the mk3 ypu dont use.