this is how i did mine. you will have to remove the window motor as well by removing the 3 torx screws, then simply drill out the center of the rivits. i replaced mine with some short self tapping screws, and have had no issues with it at all.
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P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals
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