Not sure if your switching to a 14+ sr5 or a 10-13 trail rear cover; but I have a 2010 sr5 with all the awesome chrome bling, and I put a 2014 sr5 rear cover on and all the lines match up spot on, I even transferred the backup sensors into the newer bumper cover.
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Also if you wheel at all; might want to consider either rhino or monstaliner-ing instead of color matching paint.