i hope alot of the link herin are still good.
but i suggest reading through here. it might answer alot of the questions you have.
ZETEC Performance Chat Stickied Threads
May 2014 ROTM, June 2015 ROTM
for rally-x: '04 Liquid Grey ZX3
Build Thread: http://www.focusfanatics.com/forum/road-racing-rally/667378-thenorms-rally-x-build.html
Sold: '02 Infrared SVT