for a custom made warrior jacket, look for a seller on eBay named Katarra8. If you've seen Richard's 2nd Coming video, you've seen some of her work. She also sells warrior patches regularly through her store & through auctions. I bought my warrior pins and squadron patches from her. Warrior pins can supposedly be bought at army surplus places though.
Best source for braid is probably Chris Pappas at
www.chrispappas.com
spcglider here has some neat items for sale too.