Does anyone outhere have a list off the stock system coverall sizes and stock numbers? If so please let me know.

http://www.jwodcatalog.com/products.aspx?sid=57

Just scroll down the page and this is a mandatory source of supply.

You may also wish to check the CG UDC and/or the Navy Exchange on-line uniform store:

http://www.uscg.mil/uniforms/

https://www.nexnet.nexweb.org/pls/nexauth/nexauth.wg_shop_online

From the Uniform Regs:
The coverall shall be the standard Navy coverall available through Federal supply sources, coveralls available from the Coast Guard Uniform Distribution Center (UDC), or coveralls of similar style and color available from commercial sources at lower price.

(FWIW, the Navy coveralls have been certified for shipboard use.)