FTS lifts are pretty good from what ive seen, id put their quality up there with cognito.
but i almost gurantee you that for the around the same price of a 9.5" kit rims and tires etc you could could 3/4ton SAS your truck with rims, tires, axles, gears etc... ask me how i know
ill have about $5500 in my SAS when i done with alcan springs up front, new tcase, xover, 5.13 gears, rear locker, disc brakes, recentered H1s, 38.5s, rebuilt alxes i could go on... ive put in more than a hand full of IFS lifts in the past, and to be completly honest with you, SASing my truck was by far easier than doing an IFS lift
the 9.5 FTS is around $2300 with stiff ass 10" rear leaves, then if you gear thats another good 900-1100 depending what rear locker you get (and you will get a new rear carrier because the G80 thats in there now is a ticking time bomb) if you do it yourself, add about 500-700 more if a shop does it. then you add rims and tires and once your done you still have 1/2 ton IFS and a 10blt rear, its realy not worth it. it took the mistake of buying an IFS lift for my truck for me to realize how much i should have gone SAS from the start and i still kick myself about it
just a lil food for thought