Which Pitman Arm

OK, I am going to put manual steering on my car for sure. I have access to some A bodies in the club with manual and the steering response doesn't bother me.

I have a good manual box, but what about a pitman arm? Is it the same arm for both manual and power boxes? I have an arm that came on the new box, but I don't know if it's the right one. I thought there was a website that listed all the pitman arm part numbers and stuff, but I can't find it.

The casting numbers on the arm are hard to make out, but I THINK it says

25350 801 16104 82 I know the first 5 digits are right for sure. The others I dunno...

It's a '75 Dodge Dart Sport

HELP!!