I have replaced both CV axles, a lower control arm, three of four motor mounts. Replaced a outer tie rod end also had front tires re balanced. Did not do the mount on back end of the cross member still looked pretty good but the others were shot. Vibration is only under acceleration as soon as let off gas vibration stops.

 

tracking down vibration sucks.

where do you feel the vibration? steering wheel or in the seat?

 

whenever you change mounts it's best to do them all, the older/weaker ones may may end up wearing out faster. on our cars i recommend upgrading the upper mounts. the uppers have less rubber and are a lot weaker compared to the lowers. I'm running the Nisformance uppers and Energy Suspension since they have a lifetime warranty. I got the energy Suspension ones long before Nisformance came out with their engine mount bushing kit.