For the OAI hoods there are three bumpers that screw into the core support, one in the middle and one on each side near the fenders. I noticed my driver side nut that holds the bumper in place detached from the core support. These look like square nuts that have tabs that allowed them to be pressed in place from underneath. Ultimately I can use any nut as as you can not see it from the top of the core support but just wondering if anyone knows where I can find the correct nut. I thought maybe they were "pierce nuts" but I don't believe so.

 

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If it's something like this, most of the trim clip vendors sell these. I'm pretty sure AMK and their distributors have them.

 

Did you find one of these yet.....you disappeared since you posted your question. Inquiring minds want to know.