Hi Tsizzle, what part of the world are you from?, the UK has 4 main suppliers, in no particular order;
Highwood Alfa in Swansea
Alfaholics Devon
EB spares Wiltshire
Classic Alfa London.
They all do mail order and all have good websites, EB don't quote prices on line, but they seem to charge roughly the same as the others. Fluffies response regards steering seems spot on to me, I don't think the steering box is a home mechanics job though. I recently had a suspension upgrade and the Garage I used (Alwyn Kershaw in York) also took some play out of the arm which connects the box to the trackrods. It's a bit vague I know, but his description to me was vague as well.
I should get your headgasket sorted ASAP, you don't want to damage anything. Ask 'Ricksalfas' about headgaskets!
Welcome to AO, any pics of the Car to show us?.
