think what jano means is that u cant get HUGE power without laying out a fair bit of money in zetec terms...

to get 300 hp out of a zetec ur looking at

2L zetec full engine
rebuilding it with new gaskets etc etc
new water and oil pumps
modifying the hoses so they fit
engine mounts
low compression pistons
steel rods
after market management
big injectors
stage 3 T3 turbo if not T34

thats BIG bucks!

a 220-250hp 1600 cvh

rebuild existing engine
can use same rods
fresh pistons low comp'd (already MAHLE's)
head work
cam
stage 3 T3

can retain MFI or switch to EFI

still mega money but considerably less than Zetec Turbo done properly

personally if u are worried about money...stick with CVH as a GENUINE 220-250hp will be plenty enough

bassboy