scorpion lids are good ive had 2 of them before i got my bell.. a exo400 and exo700 both were pretty good. my 400 was deff a lot louder then the 700 EDIT no way i would wear that chick lid
honestly if you look really close in between the driver and pass seat there is is bar that looks like the back section of a roll cage.. tho i cannot see any other bars so it could be a half cage just supporting the a pillars
to be honest i did grow up on a horse ranch and we did have a grain silo to hold the derr grain for feeding so i have seen the inside of these quite a bit.. their all fairly similar
seen those washers on a few bikes.. it goes under the bolt then the tabs are folded up to "hold" the bolt then the safety wire through the other tab.. though i have no personal experience so i i cannot comment on the effectiveness