New Motor Mounts - Poly or Rubber

New Motor Mounts - should I use Poly or Rubber???

I am trying to eliminate some clutch chatter that has shown up since my engine rebuild, new clutch, flywheel resurfacing, etc. and have read that sometimes a torque strap and new motor mounts make a huge difference.
I did not change my mounts when I had the engine out since they looked good and am thinking I should try that before I tear the transmission out.

Can anyone give me their opinion on poly vs. rubber mounts?

I assume I only need to replace the part with the rubber (part number 6038-7 or 7P at NPD) and not the frame mount. Is this correct?

Also, how hard a job is it to change the mounts on a '69? Can I get to the mounts fairly easily with the engine in the car? I have an engine hoist I can use to lift the engine while I do the job...

THANKS!

I went ahead and bought the complete 3 piece Prothane set from Summit.

I don't think it will solve the chatter problem but it couldn't hurt.

Thanks.

I changed out my motor mounts last night and found that the left side mount was 3/4 of the way separated from the rubber. It was not a total failure but was very close.

I forgot to remove the fan shroud when I lifted the engine so I have a bent flex fan to deal with before I take the car for a spin.