This looks OK:

http://www.ebay.com.au/itm/HOLDEN-HX...item43b1e800e1

If you want to do some work before driving it this would be good too:

http://www.ebay.com.au/itm/1974-HOLD...item43b1df1b18

Or you might have to settle for a WB:

http://www.ebay.com.au/itm/Holden-WB...item27c96c25e2