Worn engine mounts 308?

The exhaust manifold snapped just before the joint on the silencer. The exhaust is original for on my euro gtb 77 modell. I suspect that the engine mounts are worn - my son wiggled the engine last night - seems to be gone?

 

I am not sure if it was possible to see the movie? Anyway yesterday day I used a jack to see how the engine moved - carefully without disconnecting the shift bar and the top engine support (pointing against the luggage compartment) I noticed that one of the mounts moved 15 mm before lifting the car itself - the others were more like 5 - 8 mm. The mounts are expensive but I guess it is best to renew them all.

 

I guess they are as old as the car - this one is the rear right corner. Need to be changed apparently.