So I was able to find and JDM F40 style spoiler and just got it back from the shop from being painted. I want to mount it this week since I'm off for Thanksgiving and the weather is suppose to be beautiful. I'll be putting on some 3M automotive tape on the base but I'm sure that's not going to be enough to hold it down so my question is, does anyone out there know what size bolts I need to secure it to the deck? I know it's going to be metric but not sure the length.

Any insight on this would be greatly appreciated. Thanks Guys!
