A lift of that height would sure be quite a project. I'll sum up by listing the absolute necessities.
Front suspension parts:
Custom fabbed 6" SFD (will need to include blocks to drop the front subframe, engine mounts, steering shaft joint, strut tower spacers)
2" coils (available from AC
Custom lengthened front driveshaft (probably to include double CV joints due to the much greater angles)
Longer brake lines
Rear suspension:
Appropriate combination of either Grand Cherokee or Land Rover springs & spacers (the right springs could probably net you 6" then 2"spacers)
Longer shocks (gonna have to do your homework to find what would work best)
Custom fabbed panhard drop bracket
Custom lengthened upper & lower trailing arms (panhard bracket & trailing arms would be to keep proper rear axle geometry & alignment)
Custom lengthened rear driveshaft
Longer brake lines
Can it and has it been done? Yes. Is it a ton of fabrication, figuring, work and money? Yes. Is it worth all of this to be able to get 35's or maybe 37's under a vehicle that can't be regeared to compensate for the much larger tires? Depends on your wants and intended use. If all you're looking to build is a show queen, mall crawler or boulevard bruiser, than as long as all the work is done properly, with safety and driveability in mind, and dropping close to 10-grand to build a unique ride isn't an issue, go for it! Don't expect it to be a good commuter or daily driver (not saying you couldn't, just wouldn't be very practical), or an amazingly powerful mud bogger or rock crawler (unless yyou take the project even further, adding a transfer case doubler and/or doing a solid axle swap, which would make almost all on the above list null & void).
Keep us posted on your decision