Best off just converting to T3. They should have put it on the car from the offset.
I done mine in a weekend without taking things too seriously with a mate, my toolbox, a crate of beer and a pizza delivery.
Escort RST exhaust manifold and turbo
Escort RST downpipe (needs cutting and welding to mate up with FRST system).
T3 oil feed pipe
T3 oil return pipe and push fit connector for block.
You also need to move the rad forward slightly.