I just received my trunk spoiler from Hal today and the instructions say to use 3mm, 6mm, and 11mm drill bits. I do not have any metric drill bits and do not see any available on the internet. I found a conversion chart that shows that an 1/8, 1/4, and 7/16 would be close. Is this correct? I break into a cold sweat just thinking about taking a drill to the trunk lid and want to be damn sure that I am drilling the right sized holes. Thanks in advance for your help.