Bourg A22

Hello, I'm new here. Trying to find out some info on an old Bourg A22 collator with an AGR and PA attachment. This hasn't been running in some time because I have a Konica Minolta 1050 with booklet attachment for my saddle stitching. As the 1050 machine is needing replaced, I may need to downsize my digital copier and need to look back into using the A22 for my booklets. Are there any more current collators that will hook up to the original AGR/PA setup, or do I need to just get the old A22 operational? Also, I've seen bits and pieces about a DA converter for the ARG. Does anyone know about those, and if that work on the ARG, or would I need a more current model. I'm not sure of the differences between the ARG, and ARG-P or ARG-T, etc.. Thanks for any help, as I am new to the collator world because of being spoiled by a production machine. Any help is greatly appreciated!!