There is good info on this site, but not really phrased like what you are asking. The answer depends mostly on the difference in height between the upper and lower ball joints on the spindles. At a minimum you need to take that into account.
This may be a reasonable thing to put into a "Lessons Learned - Front Suspension" thread. It can have an item that points to threads that describe use of the Miata front spindle.
Some of us here use a web site called Vsusp for our basic suspension stuff. It is probably less detailed than what you bought, but it is free and your information gets stored in your URL link. That means that when you post the link here anyone can visit the link and get your number for the suspension and look at it. You can get the dimensions of the upright and the frame mounting points.
Here is a link that Joshua Briggs just posted for his front suspension. He is using Pinto front parts because he found a good deal on a complete setup - calipers, rotors, hubs and spindles for under $400. I know there are Vsusp links for folks that used Miata, we just need to track some down for you.
Briggs early front