What have you done to your DeLorean today?

[dn010]

So I upgraded to vented rotors using the stock brakes. Are the Miata brakes an upgrade compared to them?

In my opinion:
I wouldn't say the Miata kit is necessarily a "major" upgrade. I'd say the base kit is more intended to replace the stock calipers and rotors for Miata components that are readily available and cheaper: a pair of Miata drilled and slotted rotors are 72 bucks. The selection of rotors are more vast than the "DeLorean" selection. If you go with larger rotors and calipers, then it is a better upgrade but it depends on what you want to do with the wheel size.

For an even better upgrade, there is the Wilwood kit and it still uses the Miata rotors. I am going the Wilwood route very soon.

Ultimately yes, they are an upgrade whichever kit you go with.