Case Davis 25+4 backhoe attachment information needed

Hi all, new member and first post. We just purchased and decent Case Davis 25+4 trencher and would like to find a backhoe attachment for it. I didnt get any manuals with it but we have them on order. I assume that there people around who deal in used parts and attachments but I have not had any luck finding them via internet searching. If I had the attachment model number that would help a lot along with any other advise or tips. Dont plan on any heavy use for the hoe just squaring up the ends of the trenches etc. Thanks in advance for any and all help!