as for the clear front corners...you have two choices..well three really,but i'll only go over the two i've done,first you can take the lense off the housing and dremel/sand the orange out=time consuming,secondly you can get the ones from the mondeo and fill in the gap in your fender,since they arent shaped the same at the corner=time+paint+$,since you'll need to repaint the fenders...for the rear end,if you can get some mystique tail lights from a junkyard you can cut the red lense off the tails underneath you'll find a clear lense...i did it this summer,took all of 10 minutes and 6 dollars for the dremel bit...i sold them to skrilla187 he has them on his very custom se,but i got the idea from amarv12,..looks best on white,and prob wouldnt look to bad on silver either
...on their are tons of mods for the zetec,just wont find them at your local pepboys or TOONer shop(thank god!!!)anything you can do to a honduh 4cyl can be done to the zetec,headers,cams,sprockets,tb,no2,s/c...etc.. for a exhaust check ebay,and the site classifieds,for a budget the svt exhaust is your best bang for your buck,good size for a n/a 2l,and not too loud,usually can be had for 100 or so,i think you can find one today,intakes,well you can just go open filter and attach it to your stock tube,or get creative like sleeperz....these cars are handlers first and foremost,so dont expect crazy gains from small mods..and btw good luck to ya