ive got a mk4 escort with power steering.
it was a converion kit using a nissan bluebird rack but it is not straight forward and invloves bulkhead modding and custom steering colum and ive got modified pedals to clear the colum.
my ps pump was easy as i have a 2.0 zetec with a complete mk5 escy pump setup.
mk5 escort racks are too wide and are not feasable.
you can get electric conversions for 500 quid on ebay and its far easier to do, i reccomend that instead of all the grafting
my cossie rims are 7j and 40mm offset, fit a treat