i have seen this done using a mk5 rack but fitting brackets are required to bolt the rack to the bulk head or in some cases are welded to the bulk head.

There was some mk4's fitted with power steering racks but this was done by an after market company to cater for the disabled drivers but these cars are harder to find the rocky-horse-shite i did however see one of these cars a 1.4gl as an uncle of mine was partially disabled but this was in the early ninties so i guess that one would have disappeared long ago.

but good look on your mission