look at www.drag-race.com for plans.

Jr dragsters do not have to certify at this time.
just like real cars - costs $ to go fast. The faster ones are very hi tech.
Almost all local programs are bracket racing.(fast not too important)
NHRA and IHRA have almost the same rules/spes.
You can buy all necessary stuff to build-race them now. Don't have to make anything if you don't want to.
The people are very nice that run them and they will help you get started.
Plan on spending a few $ to be competitive. Gotta be serious.
Very hard to race "on a budjet' now. The kids are really good racers now. Not a game anymore.
I Have been involved with them for many years, Retired now.
Thought I'd post a little info.