spoiler probly yes just drill some holes and put a good sealent or sumthing to keep moisture out from under the spoiler or anything that will prevent rust from forming underneith... as far as the mirrors go im not sure theirs i think 3 nuts on the gts and i havnt a clue whats on the sedan and i dunno how the mirrors would look if the did go on if they would be a perfect match and flow good with the door or not im not sure but good luck!!! also are u going to try and have the 3rd brake light functional ??? i dunno how the wiring works on them cars
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