The issue is, I don't know any private key bruteforcing tool that does that so you might have to search for one yourself of find someone to code it for you.
The feature to limit search space when recovering Base58 inputs was added to FinderOuter in version 0.15.0.However, I can't seem to find an option limit the search space of each specific position; the feature seem to affect all of the MissingChar symbol.
When you want to modify the search space you have to set the whole space for each missing position but it is easy to set the other positions to "All" by only pressing a button and only limit what you want by manually adding characters or removing the extra ones.
For example lets say we want to recover these two missing characters in "L53fCHmQhbNp1B4JipfBtfeHZH7cAibzG9oK*9Xf*FzxHgAkz6JK" and you know the first one looks like "1" but you have no idea what the second one is. After clicking "Start" (to process the key and initiate the arrays) you enter "1" in the textbox and press "Similar letter" button so the list can be populated with "1" and "L", then you can continue modifying this list by adding or removing characters if you don't like the suggestions.
Then you move to the next position by pressing the ">" button and repeat the same thing. Here you simply click the "Add all" button to populate the list with all 58 characters.
When you are done setting the search space you finally click Find.
