Quote Originally Posted by Panache
How did you go about converting the jacket? Did you have a pattern to work from? I have been considering trying to make a kilt jacket out of a regular tweed sport coat.
A post by Alan H. was just bumped up which takes you to his website regarding converting a tweed coat to a kilt jacket.

I also re-tailored a tweed jacket from a thrift store for my own use. Really, all it involves is: undoing the inside lining for 6-8 inches from the bottom; cutting off a few inches (next time I'll remove 5 instead of 7) remembering to leave enough for hemming; cutting off pockets and sewing slash pockets and the bottom button hole closed; drawing a suitable cutaway, then pressing and sewing it with the edge stitch familiar to all kiltmakers; re-doing the hem; and, finally, shortening and tacking down the lining again. There are always decisions and judgements to make along the way, but the creative rush is fantastic.