53 Chrysler upper control arm tool

I am rebuilding the front suspension of my 53 New Yorker. The Shop Manual calls for C-608 tool to install the pivot arm on the upper control arm. I cannot find anything re: this tool. Any insights? Is it really necessary? How can I reassemble the suspension without it?

I could use any guidance possible here - I am surprised with all the rebuild kits available there is so little information about this tool.

Thanks, Dean
Author: acmpc