Independent REAR Susp. in my truck???

[fast58]

I've started another thread about a Crown Victoria IFS swap I am getting ready to do and elgemcdlf(elder user) posted a pic of a Lincoln Mark VII IRS under his truck. I'm just curious if anybody has done this swap and if so how difficult is it? What are the pros and cons? How will the IRS hold up to a built 360 W (351 W bored .030 over)? And how does this suspension ride compare to the traditional solid rear axle setup? Thank ya'll in advance for your input.