To complete this you will need to of completed Happily Ever Faster. In order to reach Tyrannosaurus Wrecks you need to start off where you first got into Midway at the start of the game, you should be at the top of the park. From there go down the steps till the reach a big sign saying Tyrannosaurus Wrecks, turn right from here and continue going down the steps. Keep going down the steps passing Tomb Town and Happily Ever Faster until you reach the bottom of the steps where you should see giant chicken with targets on and a ride. Go onto the ride and it should move, and carry you under the bridge to Mystery island and to the entrance to Tyrannosaurus Wrecks. The ride will stop, get off the ride and turn left to go into the mouth of dinosaur. You have entered Tyrannosaurus Wrecks.

There are two sides of Tyrannosaurus Wrecks, one that is all grass and water and another that has lava and ice. Go to the side of lava and ice and cross the water on a large piece of woo that acts as a bridge. You should see a door that says 2 and left of that an opening and some handy poles that you can swing on to reach a higher level, use these. When your at the top turn left and you should see someone with a orange t-shirt symbol above their head, talk to them by pressing triangle. He will ask if you want to buy an outfit, buy this and take it back to Nina and you should get her another car.

If you cannot afford the outfit try smashing boxes with the square button and winning races.

Hope this helped.