Not a zetec anyway but i can gaurantee a rst t3 with a .36 housing will be too small, and people will agree with me, best bet is to buy a cossie t3 which has a .48 housing and bigger compressor side, at 14 psi can make around 240-250bhp, plus you can run a 3" downpipe easily which you can move around as it has the 3 bolt housing.

Also you need the flywheel from your standard 1.8 for a rst clutch