Misinformation ?? M8 this is a pocket bike forum so we wont have all the answers on this subject
I think I mentioned cams regulations uh huh yep I did

actually crash dummy mentioned cams also .....
& did you read his post ?, he is intending to
build his own car & depending on class, track & what regulations are in place, if he intends to race interstate the regulations may change ?
Things like fuel cells harnesses if a roll cage is required are all points to look into b4 he starts his build
So it would be best to contact the relivent track or club & or others doing this form of racing & what the scrutineer's of the particular class he intends to race will look at
Is it going to be a car or gixerkart style machine etc etc ..........
there is more to look into & a pocket bike forum can only try to point him in the right direction with the limited info he has posted for all we know it might be a 700cc engine in a Wheelbarrow