Well I am an A.A.er and let me ask you this; are you looking to do steps?
Just find somebody who will take you through the steps. Why do you even have to use the "sponsor" word? But it is up to you to decide if you're willing to try just doing all 12 steps and see what comes of it. What's the worst you can do? Get stuck on a step or something? Or maybe you'll just do them and you'll need to share your 5th step with someone... maybe that person. Then you'll need to do 6, 7, 8 and finish those amends. Then do 10, 11, and 12 and you'll be sort of done needing a sponsor. You might find yourself in a position to sponsor someone yourself... or not. This is looking a bit ahead, I know.
If there were really any such thing as a sponsor, I see it as a person who guides you through the steps and points you to the book and God. That's about it.