As far as I know there is nothing you can do as block is taller hence the need to use small cam belt tensioner and different profile of the oil pump , I have to say that if you have built one of these there is not a lot of need for a belt cover other than to keep debris from entering belt , but as long as you aint going to drive over gravel car parks too fast should not be a problem , and if at all worried use the bottom of the zetec one as it would be more likely to suffer from debris than the top .

Just keep rags and loose objects well clear when engine running and bonnet up