Updating the $$$ figures for 45 years later
Taking into account inflation, the 1971 figures come out to something like the following in 2016 dollars:
$300,000 stolen in the initial heist ---> $1.8 million
$40 tow-truck job ---> $240
$1,000 reward offered for info ---> $6,000
$5,000 reward offered for info ---> $30,000