If you've got a 1.8 zetec flywheel, I think it should be all good!

I've had a 1.6 CVH fly and my 1.8 Zetec flywheel next to each other, and they look identical!

There's also one or two people on xrtwo.com using 1.8zetec fly in their ZVH and 2.0 zetec engines, and retaining the XR starter motor! (As the 2.0 fly doesnt fit the BC box, and the CVH flywheel wont work with the zetec CPS)