1968 Z/28 Rear Shackle Bushings

[70L34]

Hi folks, I bought a set of what were supposed to be old TRW shackle bushings for my 1968 Z/28, but the OD to spring ID clearance was substantial, so I'm pretty confident they are incorrect. Are one of you guys able to verify the part number, and who sells the best reproductions?

Thanks!
Tony

[GMAD_Van Nuys]

Prior posting on bushings used on 1968 Z28:

https://www.camaros.net/threads/time-for-another-68-z-28-to-be-restored.182584/page-23#post-1677546

[x66 714]

I've only used the original GM. They pop up on e-bay from time to time. I collected enough to do both of my cars so I stopped looking for them....Joe

[rare396bronze]

GM  # 3908370 Try calling a dealer and give them this # don't know if they are still available!

[68camaroz28]

Prior posting on bushings used on 1968 Z28:

https://www.camaros.net/threads/time-for-another-68-z-28-to-be-restored.182584/page-23#post-1677546

Per my build thread as GMAD Van Nuys posted I had mentioned back then years ago GM #3908370 is no longer available.