DOHC as a donor?

[thane]

It looks like a sierra 2l twink donor has come up on fleaby near me, does anyone know what difficulties there are with using this engine as a donor? reason I ask is I'm not sure if I will be able change this engine out for a setec until a later date and would like to keep the car in a road worthy/MOT state until I'm ready to start the build.

In short, is it worth it then transplant a zetec 2l at a later date or just hold off and wait for a chv or a pinto to come back? long term I do want to use a zetec but as always time and space are against me.