When I first got my Celica the guy had taken off the fuel door for whatever reason, so I had to go to a junkyard and I got one, it for some reason, did not come with the screws for it, so I painted it and want to put it on but I tired a couple screws and they dont seem to fit, is there a specific size or anything I need for these or should I just jam it in? Thanks

Looks like Toyota part number# 90149-50057. x2 bolts