Shortening rear end and backing brace?

http://www.ebay.com/itm/321111007126?_trksid=p2060778.m1438.l2649&ssPageName=STRK:MEBIDX:IT and this http://www.ebay.com/itm/200982163134?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649 These are what you need to do the job