I think its actually pronounced rust removal. You cant really fix rust. If its really bad you would have to cut out body panels. This might not be a bad option if the rest of the cruiser was good and you
A) really like doing body work ..... or
B) plan on putting on a custom body style that was purpose built anyway.
On the bright side you should really be able to drive down the price do to the rust if you did want to try one of these options