Jim, I respect that you have seen a few replaced. However, I have seen many, many more than a few built...
Anyway a lot of this has been covered before:
VCT vs. non-VCT discussion:
http://www.contour.org/archive/showflat.php?Cat=&Board=UBB33&Number=391099&page=&view=&sb=&o=&fpart=1&vc=1
To summarize:
1995-1997 Zetec = No VCT
1998-2002 Zetec (non-focus) = VCT on Exhaust
2000-2002 Zetec Focus = No VCT
2000-2002 Zetec Escape= No VCT
2002 Focus SVT = VCT on Intake
Sticking VCT discussion:
http://www.contour.org/archive/showflat.php?Cat=&Board=UBB33&Number=393158&page=&view=&sb=&o=&fpart=1&vc=1 
