First Mazda Miata- NEED HELP!

[jaxfitguy]

Thanks in advance for the help. I recently bought my neighbors 2001 Miata. Mainly because it was in incredible shape and run very well and 3k dollars. However, it has a horrible vibration when idling with the a/c on. I know he has change the vvt actuator, coils, plugs, wires, cleaned TB, changed CMP, etc. My first thought, not knowing much about these cars, was the engine mounts or possibly the AIC. There is NO power loss or skipping at all. Any advice? direction? experience? thanks again!

[SM16RMSM]

Sound like motor mount to me.