if your gunna go black top,

get a 2.0, more power,

i4's have nothing in common with pintos, and are good engines, and dont break,

zetec pretty reliable to,
and zetec tuning parts are so cheap, rods and pistons are around 600 from america now.

but deffo stretch and get a 2.0,

on the flip side, at least if you go for an i4, you can use standard dohc engine mounts,

if you go zetec youll need custom, and custom fly wheel and clutch