need a little help for this question,is the universal joint on the front half of the driveshaft or the rear half on a 89 300se,and is it possible to install it backwards

The rear half..

It is not possible to install backward.


Driveshaft, Axle & Wheel bearing
Driveshaft, Axle & Wheel bearing







.

__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/