5th shock absorber kit per S.B

["Jay" <jciampi@xxxxxxxx>]

Has anyone got the service letters for the 1963-66 Ramblers that mention the 
vibration problem with some cars. It was a shock that mounted horizontally 
between the frame and the Right rear shock mount. It supposedly eliminated 
some weird vibration problem that AMC had. I don't know if it pertained only 
to the BIG car series (10/50/80) or if it included the 01 series also.

I have this vibration from the drivetrain(I believe) at approximately 32-35 
mph, whether the car is driving ahead or just coasting(out of gear). I know 
it is NOT the front wheel brgs. as I just installed all new ones due to 
having a bad one on the left front.
The driveshaft u-joints have been replaced last year. Could a u-joint be 
installed 180 degrees out?  I get a low roaring noise above 50 mph  (or so 
it seems to my ears) I have convertible, so it may be wind noise.
I intend to jack the back end up and put it on jack-stands and run it in 
gear up to where the vibration comes in and see if the driveshaft is out of 
balance or what else might be wrong.

Jay.