have a wild guess I dare you
ive recantly poly bushed mine and i noticed an additional vibration lol. only on idle but if i have my air con on at the same time, the steering wheel vibrates like a bleedin rabbit lol.So helpful! ^^ Be gentle this is his first post FFS lol.
Replacement engine mount from Renault are circa £70-£80. Im not sure if you can get pattern parts or not.
My advice would be to go for the poly bushes as it cheaper to do, will reduce engine movement and won't cause any additional vibration.
Pete Auto nation fixed me up, think it was only £23 IIRC