The poor 1.4cvh in my mk4 is getting old and is asking to be put out its missery so i know its an oldie but just does what it takes to go zetec? all i know is

1.. 3i tank n pump
2.. non pats 1800 zetec... what is pats?
3.. modified rear mount

hows does the wiring go.. its a carb with no fev counter so is that a plus or more aggro??