Ive just spent 2 grand on mine this week, so i know exactly what id spent it on.

T34 turbo with 360 degree bearing
Set of greens
Cam belt kit
Water pump
Leads
Plugs
Dizzy Cap
Cometic gasket
ARP Head studs


Next 2 grand i spend on my cossie will probably be on:
coilovers
brakes
clutch