Any sign shop that does vinyl lettering can do you a stencil. You weed out the lettering instead of the background. They use a product called GerberMask, or TransMask. You get the stencil on a piece of application tape (like wide, low tack, masking tape). You peel off the stencil on the application tape, line it up on witness marks on your truck, then squeegee it down. Peel the application tape off, then spray with a stink bomb and flat white. The only problem is (to me) that the stencils have too sharp an edge. Most military stencils have a little overspray bled under the stencil, and the mask type looks too perfect. Remember, most of these were stenciled by young soldiers who were not trying to make show trucks!