The US Coast Guard Pipe band has an illustration on their web page for converting their standard issue jackets for kilt wear. I would imagine that any tailor could use this to modify practically any standard-cut jacket. Here it is:

http://www.uscgpipeband.org./media/j...ifications.pdf

Also on their site are their uniform regulations, which should help anyone (like me) preparing to wear uniform + kilt to a formal event. Cheers!