Anyone know what year dodge went to metric steering pumps?

I need two of the studs that go on the back of the pump to attach the brackets. Nobody seems to make them.

I was at the wreckers today and noticed some of the newer trucks have a similar looking pump, but serpentine brackets. Some of the pumps had the studs on the back that look like what I need.

I puled a few out, but now I suspect they are metric sized threads and will not work in my older pump.

Thoughts?

Jason