Dave,
To be honest that's a tight budget in today's market, not impossible though as there are good cars selling in the mid 50's but often they are a case of being in the right place at the right time.
You've seen the pushbutton in AZ now reduced to $37K, but that's a major project made more so by the cost of shipping parts to Australia I expect. But there's at least some upside in the PB value once restored if you are up for the challenge!
Julian