Urethane shock absorber bushings=softer ride?

Okay, here is the latest of my questions so specific that no one probably cares but me:
I'm about to change the front shocks on the Mustang II in my 1953 Chevy. I have urathane bushings the right size to use for the top stud on the shocks. I see two possibilities:
1. The urethane bushings make the ride harder or harsher because they give less cushion than the stock rubber ones.

2. The urethane bushings give a softer ride because the shock is held more firmly and therefore damps more efficiently.
I am NOT talking about A-arm bushings or anything else that's supposed to move, but only the bushings that mount the top stud of the shock solidly to the upper spring hats. Any opinions? Any experience? And engineers or suspension pros who know for sure? I'm trying to maximize ride quality, not handling. I'm taking the "every little bit can make a difference" approach.

 

i don't think it will make enuff of a difference that you would notice

 

Might be squeakier, but I doubt there will be a seat of the pants difference.

 

I don't know if this helps any but on my '94 Z28 I redid all the bushings with poly bushings including the motor and tranny mounts and yes it did make the ride a fair bit stiffer.

 

Unless you have allergic reactions to latex, stick with rubber. It'll last 10x longer than urethane-

 

huh? are we talking about car ride quality or "other ride" quality

 

Depends on how stiff they are.

A 60° Shore urethane bushing will behave exactly as a 60° Shore rubber bushing.

 

Alrighty then, rubber it is!
Note to chitbox dodge: always go latex.