Welcome Micco52
Generally you will need to show a first draft of a working ruleset before an agreement can be reached. This is a significant impost on you the developer but it is very common for someone to start a project and not complete it for various reasons. You should email [email protected] to confirm what editions/publishers they have interest in getting converted before getting too far along. Sometimes a publisher that was interested withdraws or vice versa.
Good luck - I would love to see Paranoia!