Hi,
Look at
http://www.perfprotech.com/index.htm to
see if they make one for the 1983. They
manufacture their own manifolds, and I've had
quite good luck with the company on other products.
You can also try a google search, or look on EBAY.
Good luck,
Don W.
chatterbox wrote:
I need an exhaust manifold for my mercruiser 470. It is a 1983 model.
Dont want to pay for a stainless one - just want a cast one. Either a
very good used one or an after market - mercurise dont do them anymore.
Quite happy with a chinese one..... just need the manifold not the
elbow or risers - I have replaced those .. 
Am based in Australia, but am happy to buy internationally....
Thanks,