No mate, RS Headlights onto a 2001 Mk1.
Thats what I said LoL.

there the same apart from
the indicator.
Ive done the conversion on our lasses Mk1 focus (to ST170).
You need to get the connector plugs out of either your Mk1 headlights or out
of a scrap set, then you need to get the loom plugs off a facelift focus (with about 6" of loom)
When you have these, then I can tell you what to do