they work, they will remove almost all viberation that is transfered from the engine to the frame and body, makes for a very smooth ride, some say that using them weakens the frame integerty, but on the other hand using the stock ones puts a lot of stress on the block, they are bolted directly from the engine to frame with a lot of viberation, ive used them and found them to be very pleasant , but if you tighten the float a motor rubber bisquits to tight they will feel like solid motor mounts, if you have a set try them and then decied for your self, but be prepared for the original nuts to jump all over you for just even thinking about using them