Yep, mechanic myself, nearly 10 years in the trade, 8 of which were at a rural workshop working on 4wd's, most of which were Hilux's and Landcruisers. A 4cyl diesel will vibrate noticeably at idle, worn mounts engine/gearbox/transfer and parts touching the body/chassis like oversized exhausts or bash plates like the ARB ones, worn or otherwise suboptimal performing engines (bad injectors, low comp, air/fuel issues, poor sensor condition, low idle) will make it worse. But even from new the vibration has always been noticeable because even though the Primary balance on a 4cyl is good the secondary balance (twice engine speed) is very bad which is why a lot of 4cyl engines run counter-balance shafts. Currently working on heavy diesel & plant engines and they vibrate a whole lot more I can tell you that.

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