The small superstut & the slide height equals 1 5/8 lift. Seat belts area still ok legth in any postion of chair. If you use the taller superstut this lift will be 2 3/8" lift. And you would you need more length... pepboys or autozone has seat belt extensions.
The whole thing about 4 hours including the planning. But does not inlude paint & bedliner drying time.