Legal Question in Real Estate Law in Illinois

Everything? This site can not provide this kind of assistance. That being said, if you want to change the parties to a contract for deed, the current parties must sign an amendment adding the new party(ies) and the new party(ies) must join. Whether the seller would agree to release the current buyers from their contractual obligations is a whole different issue.

You will need the seller's consent to make any changes as you suggest. I would suggest that you contact a real estate attorney in your area to prepare proper documentation to ensure it is changed properly. By the way, it is quit claim, not quick claim. They are the same speed as any other deed.