Since it seems that AU hydraulic engine mounts won't fit in my EB (6cyl). Has anyone tried the urethane mounts? I would like to use them because they should last loger and urethane is more oil resistant. But I'm worried they might be too stiff and feel like I've got solid mounts. Has anyone tried the urethane mounts and were they noticably stiffer ie. more shaking inside the cabin???

i got them when i did my engine,broke them both in 2 months
lucky they got a 2 year guarantee