+2. If I were to upgrade a nice older steel road bike to a Carbon fork, I'd only do it if I got a more expensive carbon fork. Because of the weave aspect of carbon fiber, there's a lot more possible variability in durability and ride quality between cheap and good carbon forks.
Also, where handling is concerned, you might think about what sort of fork-rake you're getting, compared to your current fork.
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"c" is not a unit that measures tire width