Available are a pair of KYB Excel G used rear shock absorbers with 34K on them. They include the left and right mounts and boots. Both work as they should.
The shocks fit the following:
Chevrolet Impala 2014 to 2020
Chevrolet Malibu 2013 to 2015, and 2016 Malibu Limited
Buick LaCrosse 2010 to 2016
Buick Regal 2011 to 2017.
Part numbers are KYB SA1002 and SA 1001
New, these go for around $100/shock including the boot and mount.
$50 for the pair.
I have some matching rear coil springs in nice shape available as well for the Impala and Lacrosse