Depends on power outputs? And is it a zetec?

If around 350bhp in a zetec I know a couple of people who have their rods modded to run c20let pistons and is a cheap conversion

Rods £240 with bolts
Pistons, ( my mate got some nearly new ones £120)
Machining £100

£460 for rods and pistons is mad, and people slate c20let pistons but in the c20let engine the standard pistons piss 400bhp

But put into account a full bottom end balance if using cheap rods and a rebore to 86mm for the pistons