Stolen Keys

[Felix S <melvnhel@xxxx>]

Hello, 
I lost a set of my keys, Someone must have found them and kept them.
Now I cannot drive my Delorean without being super paranoid that someone is
waiting to take my car. I want to get both locks replaced, what would you
all recommend, and how much would it cost me? Can any aftermarket locks be
used? Volvo locks?

Thanks

Felix