Ok here's an update, after almost completing the upgrade i realise that the turbo cost was only a small part of it.... food for thought.

915 -T4 turbo
XX-Alternator drop braket-NOT REQUIRED
30-2WD manifold
150-Turbo hanger thingee
110-Bigger hoses for the T4
185-Siemens 83 fuel injectors (still waiting for these from Fiveomotorsport in the US)
XXX-Air injectors (looks like I wont be running them now)
60-Fuel pump loom
50-New fan loom
220-Stack AFR guage
75-Cone filter
75-Gaskets and bolts
XXX-Chip/Setup
80-refurbed cam cover
15-Lambda bosses for downpipe
20-Longer oil feed pipe from head to turbo
XX-Random bent black hose from a 51 plate fiesta for free (from stat to the water pipe for heater matrix.)

Thats a tidy 1985 without a chip, I made a list before hand that approximated at 1500, how wrong was I, sure it'll be worth it though.
Now it's off to worry about the box and a hyd clutch conversion.