what you'll need is.. hopefully i can remember everything
front:
axle drop brackets, sway bar drop brackets or longer links, radius arm drop brackets or longer radius arms, shocks, coils, brake lines, drop pitman arm (at least, i'd recommend upgrading this unless you get the TRUE 4" drop pitman arm)
rear:
lift method (new leafs, add a leaf, blocks, shackles, whatever), shocks, and "maybe" longer brake lines.
other:
drive shafts may need to be addressed.. it varies. mine, had to be lenghtened for my 4" lift. i took an explorer shaft and got it shortened down for mine since my b2 had the stupid cv drive shaft.
its not that bad really.
most lifts seem to include a block of somesort that is a tapered block to help w/ your pinion angle..
like i mentioned before elsewhere, i HIGHLY recommend not buying a kit for lifting a ttb truck.. here's the list of more desirable things...
FRONT:
xj coils (4" or 6" lift coils)
good drop brackets (VMS, skyjacker, superlift [which ever one TRS parts sell])
bilstein 5125 shocks w/ f250 shock towers (longer shocks, more flex!)
jeep tj, yj, cj quick disco's... will work to mount sway bar in stock location to the axle in the stock place----- but you can quickly disconnect them for offroad flex) i'll be doing this soon, watch my build thread in my sig.
superrunner steering
extended brake lines
extened the stock radius arms about 16 inches (i believe)
REAR:
belltech 6400 shackles
bastard pack of leafs for a little lift but not to much to make it to stiff. yota leafs are good to make bastard packs IMO
whatever shim you need to align the pinion angle
shocks to match the front
brakelines
OTHER:
drive shafts
manual hubs are always good
all this info is all over the site. look around in the tech library.. build threads of several. deciplerocks and legoms13 are good ones to look into for ttb stuff. copycat's b2... just look around. you'll find some good stuff.