Can You Continue A Window Installation Project From 2008 In 2015?

Our customer explains a situation you don't see very often with replacement window installations. He wants to finish a window and door project which he began in 2008. 7 Years later, he decided to do the rest of his house with California Deluxe Windows. This is not possible with many companies or window series that don't exist by the time you need to use them for the 2nd phase of your house!