Good Deal on a 383?
The consensus I read is that a big block will not give more HP than a small block in an A-body unless you install large headers, which means hacking up the inner fenders. Without aluminum heads, the car will be very front heavy. Personally, I would put the money into a nice small block. I sure wouldn't put the heavy factory cast iron water pump housing and water pump on, since aluminum versions are fairly inexpensive.