Make your own stencils out of cereal boxes. Make them all shapes and sizes.
Prep a garage by cleaning it out real good, then hose the floor with water. As a matter of fact, just leave the hose running while you paint. Block off any areas in the garage where dust could get it and rig up some sort of exhaust fan so you don't die of the fumes - oh, and use a respirator while painting.
Then, sand the clear coat off of your runner with some 500 grit wet/dry sand paper. Use it wet - it really cuts down on the dust. Then sand it smoothe with 1500 grit and clean everything up with degreaser solvent and compressed air. Now move it inside the garage. Hopefully it is raining out side, this will help out with the whole dust in the paint thing. Wipe the whole thing down with tack cloth from the paint store to get everything off of the surface. Mask off what you dont want paint or overspray on (ie: windows, grill, lights, frame and wheels/tires...) Start painting your stencils with one color only. Wait until the paint dries and paint more stencils with another color until you are happy with the outcome. If you want your paint to be shiny, now is the time to spray many coats of clear coat. Peel off the masking only when your sure the paint is dry. Wait a week for the paint to cure properly and color sand the whole truck with 1500 grit wet/dry and then again with 2000 grit wet/dry. Use a good industrial polisher for a 3 stage wax job from Meguir's or Mother's. This is what I did on my '88 and it turned out sweet!
