We are talking about a 1982 300D with a manual transmission. It is not a USA spec car the manual is original.

Where my driveshaft connects to my transmission there is a coupler? that looks like a balancer and it has cracks in the rubber. What do I buy to replace this part? At the rear of the driveshaft I have a flex disk like a car with an automatice transmission. The one on the front is different.