Those people get pissy when you tell them their shit is only worth half of what their asking. Then they ask why. Well the "mods" you did are kinda shitty and it has stock a arms, swing arm, axle, and shocks all around.
I want to say the ones that go up front (the very front) are m6x1.0 x30mm? As for the ones up by the bars and the 3 that hold the grill on, I don't remember the size but they are smaller. I could tell you the next size down but Idk if that's the right size for sure. Def metric.
Those are things I always forget to add into what I mention on here. I always take for granted the fact that I just replace those things where most people wouldn't.
It never hurts to upgrade a few things in that department but as far as the cases themselves they will be fine. The D shaped rubber engine dampers on the front and the rear of the motor, I'd at least use 4 of them instead of two (two up front, 2 in the back one on each side).