2–6" range. What actually works on OBS GMT400 88-98 Trucks.
2–3" Level (Crank + Block / AAL)
- Crank torsion bars
- Block or add-a-leaf
- Replace shocks to Bilstein 5100s and align
Good: cheap, clears 285s
Bad: bad angles if overdone, front-end wear, rides rough on junk shocks
4–6" Rough Country
- Full kit, diff drop
- 4" daily, 6" on 35s
Good: cheapest real lift
Bad: weak shocks, stiff ride
4–6" Tuff Country / Zone
- Better geometry
- Zone = budget BDS
Good: rides better, less wear
Bad: costs more than RC
Solid Setup
- 4" Tuff Country / Zone
- Bilstein or RS9000 shocks
- 33s or 35s (regear to 4.10s)