So, I am trying to turn my CT5 into a rally car for dirt and grass. What wheels and tires will work for this? I think the tires have to be 3 inches or under. What would be the best tires for grass and what rims/wheels should I use?

Another question, what would it take to put a .12 engine in a CT5?

Any suggestions as to what I should do to make it a good rally? Thanks.