you needed
st170 manifold around £70
st170 decat around £60 new from larkspeed
st170 fexi around £20 used
st170 dip stick tube around £10 from ford

its mostly straight forward swap but you have to mod the fexi to fit the 2.0 system as st exhaust bore is 2.25 and the 2.0 is 1.75 roughly so theres no point in buying a new fexi pipe. Also undo the pas pipe nut abit and twist the pipe out so she dont boil the pas fuild.