Randman

I dont really know where to post this, or what the correct name for the part I am looking for would be, but here it goes. I am going to take out the passenger seat, mainly for 1/4 racing, weight reduction. There are 4 holes in the carpeting where the 4 bolts would screw into the chassis to hold the seat down. I am wondering if there would be some kind of plug I can screw or push into the holes to cover up the carpeting, and make it look a little more clean while the seat is out. I dont know what the piece would be called, or I would do a search on it, anyone have an idea of something that would work?