Over-Pronator (Brooks) race day shoe?

I used wear stability shoes too but have moved away from them and go with comfort now really. Do you mean carbon plated or just a fast shoe? The Brooks Launch was supposed to be their kind of stable faster shoe a couple of years ago. I used wear it for faster training runs. In terms of Carbon plated type shoes, none of them are designed as stability shoes as such but some brands are more stable than others and some models are more stable than others. Also, some of them feel very unstable at a jog but the faster you run the more stable or more comfortable they feel. The Saucony Endorphin Speed and Pro 3’s would be more stable than Nike Vaporflies or Alphaflies (though they aren’t too bad). From what I remember the Brooks Hyperion weren’t that stable according to reviews. ASICS and Adidas have race shoes too. Worth reading reviews on all of them to see what you think.

I've also moved away from pronation shoes and haven't had any I'll effects.

Certainly for a race day shoe it should be a consideration imo. Do look at some race shoes and see which ones get reviews as being more stable at that night suit you best e.g. endorphin pro 3, Adidas pro 3 and puma see to get reviews that they are stable, in relative terms, for race shoes