This is something we typically don't offer because there are many factors involved in the mechanical layout of our systems, as well as the thermal validation we perform on certain processors, hard drives, and graphics cards. Also, we could not offer warranty coverage on the system if there is a failure due to improperly installing components or overheating the system due to inadequate cooling.
On an exception basis we can provide bare-bones chassis or various sub-systems such as chassis, power supplies, and cooling solutions for volume quantities of 50 pieces or more. Please consult with one of our sales engineers who can customize a program for your specific needs.