Rear Cross Member Isolators

[Omni]

Good Day All
With summer winding down, I am gathering parts for some front end re-work on the '65 Newport this winter. Many parts have been sourced from Mobile Parts but I MAY be in need of Parts number 2071514 (R) and 2071515 (L). These are "Isolator Rear Cross member".
I say MAY need them as I do not know yet. I am just trying to source them for availability if I do need them. Trying to avoid tearing the suspension apart just to have a work stoppage.
So, do these isolators wear out? If so, is there a replacement available? Not sure how many years they were used or if they are a 'C' body only application.
Thanks to all who respond.
Omni

 

[detmatt]

I thought isolated torsion bars were Imperial only, according to the ‘67 parts book those are the correct numbers and Imperial only.

 

[Omni]

Good Morning
Attached are copies are from the '65 Parts Catalog:
According to the parts manual the isolators were used in the C body car line only for '65. May have been used in later years and models.
Omni

Apparently

 

[detmatt]

Very interesting I didn’t know that. I wonder if they were used in ‘66 too and then just became Imperial specific for ‘67.
They were vulcanized rubber blocks like the engine mounts and I don’t believe were ever supported in the aftermarket. They are susceptible to wear or breakage and I believe the only game in town is below. I had the set from the silver car re-vulcanized by them.
Nors Vulcanized Motor Mounts & Rubber Products | Then and Now Automotive

 

[1970FuryConv]

Great thread. Learned something.

 

[D Cluley]

1965 only for Dodge & Chrysler only. I noticed earlier this summer that mine are looking a little tired, so I've been thinking about this as well.

There are holes through the torsion bar support to provide access to some of the transmission crossmember bolts. I think it would be pretty easy to use longer bolts with some spacers to reinforce the connection between the torsion bar crossmember & the transmission crossmember. You would lose the vibration isolation, but clearly a solid mount was good enough for all the later years. It might also be possible to include some rubber in the new bolt/spacer design, but I haven't looked into it that much yet.