This isn't to rain on anybody's parade, but....
The Zetec is just not meant for N/A applications.
Build a turbo or s/c setup.
On FocalJet the major modded Zetecs hit 170-180wHP.
That includes; head, cams, increased compression, intake, exhaust, exhaust header, udp, intake manifold, custom tuning, larger TB and MAF.
But a reasonable turbo will put down 220wHP no problem (on crap 87 pump gas) and costs 1/3 the price.
If you want to go N/A just to go N/A, more power to you.
But if you really want a decently fast car, FI is the only way to go.
