Primary Drive Sprocket Cover bolt size on 99x SS?

[TOPENDZ7]

Strange question I know but does anyone know the size of the bolts for the Primary Drive sprocket cover for the 99x series SS. The reason being I have a new Motowheels cover that is much thinner and requires shorter bolts and I want to make sure I get the correct size. I am assuming the standard is M5 x 20 something like that so I would need M5 X 10 but I am guessing.

Thanks in advance for your assistance.

[Rocket Rick]