These S30 door thresholds are made from .040" brushed stainless steel and are CNC cut. They are much more durable than the OEM aluminum pieces which are about as thick as tin foil. These will come with new stainless steel mounting screws and depending on the year of your car you may need to drill 2 new 1/8" holes to install all 6 screws in each threshold. Once installed the lettering will show through as the color of your car, if you want it to be a different color to show through, a piece of colored vinyl under the thresholds is a great option. Another fun option is to install electroluminescent tape under the threshold and wire it to your door light so that the lettering will light up when you open your door. Many of our products are in-stock. However, because all of our products are custom fabricated, they may not be immediately available. Products that are not currently stocked may take 3-4 weeks from when your order is placed to when they're available for shipping.