Would SAT prepbooks prep me for ACT?

If I decide to change from taking the SAT to the ACT, would the prepbooks that I have bought be sufficient in achieving a high score?
Reading: The Critical Reader by Erica Meltzer
Writing: CollegePanda (SAT) and Erica’s SAT Grammar book
Math: CollegePanda (SAT)
Science: n/a.

Should these books be good enough or should I get a book specific to the ACT math, since it’s more complex?

I would say the most crossover is for English. Otherwise, no, get new study guides. Pick up For the Love of ACT Science too.

I was looking into that book for science. Also,would I be good if I don’t get a book for the reading section since it’s mostly obvious summary-related stuff?

The science section is more analysis than it is anything else. The most you can do for that is just gather up as many passages as possible and practice, practice, practice. By doing that, you’ll properly be able to analyze the passage because most of the questions are just number, graphs, and passage clues.