There are many providers in the Twin Cities who will provide this service, but very few have the equipment. My advice is to purchase your own strap-on and harness. That way you will be able to ask just about any provider if she will use it on you (many will), and more importantly, you can be assured of its cleanliness. I bought mine at Smitten kitten on Lyndale in South Minneapolis. I would avoid the cheap ones they sell at sex world or fantasy gifts, and get a really good harness (all adjustable to any size woman) and the size dildo that pleases you. It will cost you about $100/$125, but, once you have one, you will have all sorts of opportunities to get pegged and be assured that it will be a comfortable and safe experience.
As a bonus, there are many women who have a "secret" strap on fantasy, and will happily agree to peg you at no extra charge.
I actually own my own strap-ons. I enjoy it and have been using one since I was 18. Its my thing and it always has been. If you have never done this before I would reccomend you try it with a provider who has lots of experience with it. It can ve very painfull if inserted wrong or thrusted to hard. It can also be enjoyable.
I'm so in love with strap on play! It is my favorite thing to do! I wish I could do it every day of my life. And I'm one of the girls who don't charge extra! Plus I have my own and its the best dildo you will ever have in your ass! Call me if you want to try it. I will only be in town for two more days! If not, maybe next time!