After searching around, perhaps I have answered my own question. I see the NHRA recognized the engine and it seems to me the Pure Stock rules package is heavily influenced by the NHRA Stock rules. I still would like to get some direction and confirmation about using the F.I. unit. It would be a struggle to get a decent amount of air through and air cleaner like this.
This being the first time I have considered a build like this, I am starting here. If there is a better place to go for answers, please let me know.