Update: I took the new pump out of its reservoir and put it in the old reservoir. The bracket lined up perfectly, but the original bolts were too big. So I took it down to AutoZone and they hooked me up with some bolts that fit. Then I installed the pump to the bracket and the bracket to the motor. When I went to put the pulley back on there was a lip on the shaft that prevents the pulley from going on. I did some more research and as it turns out, I have a 1973 Chevy blazer with a 1985ish 350 in it. So I have 2 options. I can put the pump that I bought back together, attempt to send it back, and buy a pump for a 1985. But it's pretty easy to tell that I took it apart. Or I can try to find a pulley for a 1973 pump. Not sure what I'll do yet, but I really appreciate the help!! I feel a lot more familiar with my trucks steering system now. Thanks!!