I know with out a doubt that the Calmini 2" suspension lift works on an X-90 and see no reason why the 3" would not fit.... (I had a 2" lifted X for years). I never attempted a body lift due to not wanting to mess with the bumper brackets... Typically that is where a body lift 'wont work' with a variation of a vehicle. I'm 90% sure you would, at a minimum, need to make/modify bumper brackets to make any body lift work.
As for quality of lifts, I can not speak for other brands, but I purchased my Calmini 2" kit in 1995 used it on 2 vehicles over a period of 10 years and it was still on the X when I sold it to Digger and he drove it home 1400 miles up the east coast.... My 3" lift was used over 8 years and still in decent enough shape to sell when the kick was parted out during the build of my current rig.
Zig