Dont install them, redo them with a set of bhr if you can find them. Factory rx8 coils die every 45000 kms like clockwork!
If you are redoing it, a set of LS coils with a tune to fix the dwell time can be a cheaper option too as bhr are pricey.
BHR ones may not be available anymore though, but even a used set will work far better than the mazda coils, do not ever buy used mazda coils for your rx8, its like literally burning money.