If your local rules require the use of slots in the stock location, then this body is for you. It replicates the Scout Grand Prix body. Slots are in the stock locations and accurately cut on a table saw.
The three holes drilled in the appropriate locations for Lead or Tungsten. The rear most weight hole is moved further towards the back (like the extended wheelbase body) so you can make better use of your potential energy by scooching the CG back a bit. – see lecture 7