congrats on the new car!

I would suggest looking through the major items of the rule book, like cage design, and making sure the car meets those updated requirements. given its age there's a possibility it will need a 2nd door bar on one or both sides and possibly a full-width "belt bar" in the main hoop. if you have to get that done, be super type A about looking over the cage and other structure and look for rot, incomplete or otherwise ugly welds etc... and get them fixed BEFORE you show up at the track.