Rumbles friendly comp. race entry

what's the deadline to be up and running and would a F.A.S.T. motif be allowed (factory appearing, stock tires)

I personally only use factory parts or very factory appearing parts and my car is what I call "as if the factory did it" because I am installing a big block which was never available in the car but everything is date coded and the idea is if someone didn't know these cars, they would be convinced that it came from the factory like that.

I would like to prove that with tuning and planning, stock parts can be fast and reliable just as the factory intended.