Hi still ant got it in yet, nearly ready though I think

Can anyone tell me which crank sensor should I use? There's one on the scrapyard-Zetec I'm fitting which I assume (hope) works...then there's the one from the 1.4 cvh I got the efi flywheel from, or the one on the car at present (1.1 xflow). The only one I know is working is the one on the car at the moment so I'd use that but will it fit on the Zetec and work ok with the cvh flywheel?

Thanks