i'am looking at an old international 3200A skid steer along with other older 1970s skid steers
and i'am trying to find a company that would offer quick attach for them
I think you'll hav to make one. There is companies that make kits to convert small loaders/skidders on ebay. On my kubota I bought a kit that had the plates and pin lock mechanisms and then had to weld my loader mounts to it after I cut them off the bucket.
Yep that's how I did it for my loader as well.
Get looking around Amazon for quick attach conversions or skid steer quick attach kits and you'll find a lot of stuff. Then you can always contact them companies that are listing the stuff to see if they can make you something.