My Dart Sport is in the IHRA-only crate motor segment of their Stock class where they allow a 750 Holley on small blocks.We run with the rest of the "regular" Stockers, just with different HP ratings and indexes. They also have a Stock GT class that allows regular Stocker engines in different year bodies, like NHRA SS/GT. I went with the crate motors because all I ever worked on was Holley carbs. I kinda wish I had the time and patience to learn about TQ's so I could have the option of dabbling in NHRA. But that creates another whole set of problems with time and money.
All we can do is change jets, squirters and pump cams. Choke plate is retained and no grinding, polishing, narrowing, etc. I run without a power valve and jet "square". I'm always tinkering because any changes, like X-pipe or cam, has changed the optimum set-up a bit. Of course, winter to summer can also change jetting a bit. I've been using the 4779's for many years but switched to the legal aluminum Super Street versions, which they also pay contingency for if I'm in a final. They seem to be a little easier to tune and don't run as rich as the 4779's.
I learned a lot from the Holley books published by HP Books, not just about HP tuning but the basics on how they work and how changes affect things. They are found with soft-covers.