All of that is still available for your local cat dealer. You can buy the individual parts or a complete kit.
The guy at the cat dealer around here told me they were discontinued. But they also haven't been any help with older equipment when I have called them before. I'll call a different cat store tomorrow and see what they tell me.
The 5F3525 number is the actual part number for the carb itself. The part number for the kit for that carb is a 4M8429. $150.78 and is readily available through any dealership. There is a paperback book that sales reps at the dealers have to use to take the carb part number and cross to a kit number. I understand not all parts guys are super eager to do this much work. This kit is very complete and should get you fixed up.
Let me know if you need any other numbers for any specific parts.