The only quibble that I would have with using Ortmanns on a Stratos would be, that they would make the car 'tip' rather than slide. IE they generate too much lateral grip for a car with a relatively high c-of-g. If that's the case, I'd recommend slot.it p2s in their smaller size, as a nice balance between grip/slide/traction.
Another of my 2p worth.....
-Rob