M@B

Hey all I did a search and couldn't find exactly what I'm looking for here.
I'm about to swap in a Mercedes om617 into my 94 pickup.
I'm wondering how you guys that have done this swap have mounted it to your truck? What I mean is the few threads I did go through, it looks like they welded up new monts then bolted it straight to the frame.
Does nobody use the rubber engine isolators between the mount and the frame?
And if not, how's the vibration?
Thanx for your time.