Need Help about hummer 14" lift kit ???

[Saudi H2]

I was searching the net looking for a lift kit for my Hummer H2.

I found this one ! 14" inch with BIG tires 44 or 49.

Its at full throttle suspension and this is the link.

http://www.fullthrottlesuspension.com/model/index/1/15

Is it fixable on the car ?

Can it be done ? by a not that expert in lift kits ?

Do i need to make any modification to the car in gear reshos or other stuff ?

Or do i need other stuff with this kit ?

Any one is fimlier with this kind of lift kits ?

Thank you