arr ok that would explain it as mine is a 2001. But i found this on Wikipedia, as you can tell im a bit bored this evening and really havent got anything thing else better to do
Right-hand drive production post-1960
In the 60s, the main Alfa Romeo seat was moved from inside Milan to a very large and nearby area extending over the municipalities of Arese, Lainate and Garbagnate Milanese. However, since then the Alfa seat is known to be in Arese, since the offices and the main entrance of the area are there.
In 1968, Alfa Romeo, a virtually unknown brand within the UK was brought to life at Mangoletsi in Knutsford, Cheshire.
In the late 1960s, a number of European automobile manufacturers established facilities in South Africa to assemble right hand drive vehicles. Fiat and other Italian manufacturers established factories along with these other manufacturers, Alfa-Romeos were assembled in Brits, outside of Pretoria in the Transvaal Province of South Africa. With the imposition of sanctions by western powers in the 1970s and 1980s, South Africa became self sufficient, and in car production came to rely more and more on the products from local factories. This led to a remarkable set of circumstances where between 1972 and 1989, South Africa had the greatest number of Alfa Romeos on the road outside of Italy.