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Jeff,

Those look like Newell specials to me. Measure up the bushings and look for something in the 80 Durometer range to replace.

This might get you started………. https://www.etrailer.com/dept-pg-Accesso...hings.aspx

That is a completely different setup than I have both front and rear.

Thanks, I will start my search and update this post with what I find. 
Need to get out the calipers and get some measurements.