The proper kit is a non starter as the rear wheel base is different on the Escort Cossie to all other Escorts. You will have to spend a lot of cash to get the rep looking anything like the real deal and then the traffic light grand prix will show up the cars real identity.

Insuring a Cossie look alike is also usually not far off insuring the real thing.

The work involved to convert a stcok Mk5 Escort to 4x4 or RWD and then building a ZT motor properly will not be far off buying you a proper Escort Cossie

In short mate hold out and get a realone in a few years