complete it to what degree? everything so that you can drop it in the car and run it? or complete minus all the ancillaries......
pretty open ended question...
your better off looking for yourself on a few websites and seeing what you can buy, that will give you an idea of what parts there are.
or look at some pictures of disassembled engines, and see what's missing on yours.
www.pegasusautoracing.com
http://www.burtonpower.com/
etc.
sounds like you have a long engine there, are all the parts together or separated? are the internals in the engine? is it a bare head or is the valve train in it?
its not an easy job to just go and list all the parts in an engine.