But of course!
I haven't auto-x't in several years, but as I recall, winning every round wasn't exactly the name of the game. If it was, I wouldn't have been autocrossing an '80 AWD Subaru wagon, or an '84 Colt Vista Wagon. It's all about fun, and I can think of no more fun than a go in my SVX. The only reason I haven't done it, is because they're all run on Sundays and I don't get out of church in time to make registration.
As a veteran autocrosser, I'm guessing you know the SCCA rules well enough to restrict your mods so that you'll be able to stay in stock category, where a win every once a while is a definate possibility (can you say "RAIN"?), but even if you go to street prepared you'll have more fun than one person is meant to have, which I always thought was the 'hidden secret' to a 'good time' (sic).
AUTOCROSSERS GO IN FAST AND COME OUT HARD!
(I didn't say that!
)