Flattie (why does that name remind me of Judy Buelow in my high school?):
The inspections will begin Thursday and will last through Friday -- but there will be inspections available all week long. If, for instance, you'd like to have your build checked over even though it's not ready to race -- take it to Bville, wait for the big crowds on the first couple of days to dissipate, and then go to inspection. The inspectors will have enough time to spare then that they can give you advice on what you did wrong, or what you need to do as well, and so on.
Ditto for World Finals, and at World of Speed, too. Remember, the inspectors also hang around to view vehicles that are in Impound (along with Dan Warner, who's the top dog in the Impound corral, of course).