Before you get a stock unit, make sure the color and density that will closely match your needs is available. Watch out especially for the hairline contour. Stocks can fit as well as customs on your head, but if it is a temp only, it need not be a concern if it does or doesn't have pleats in the lace. You will need to cut the lace to your template pattern, except the hairline, of course. Cut it in, and you're good until your custom arrives.