I have notice the same on my wifeÆs uncle LWB, but I have also notice it is very noticeable if the engine is still cold and the RPM's are still a little above 1k, have you notice it under low or high RPM's?. I think is characteristics of the coil springs setup but don't quote me on that some of the more Guru guys might have a different view.

88 red Montero with the Dakar Special Edition decals, 438,000 miles (As of 7/23/2012) some occational blue puffing but still strong and counting!!! I am going ppsshhh (turbo), Stay tuned =) ...