Chris, there are only a few classes for the Evo's to run in. If stock they are in "A Stock". If you have minor suspension, street tires, and engine bolt-ons that DON'T increase boost you could probably run in "STU". If your boost is turned up, or the BOV has been modified your are squarely in "SM" which allows slicks.
Let me know your mods and I can tell you exactly where you will be.
Ed, diesel fuel works great on asphalt and it's sealer, just don't get too much on your shoes as diesel eats everything!!