For foams I would try to make a front spool. It seems that most of the fast guys around my track are using the spool with foam tires they say if helps with the steering of the car and this is on a tc3 wich is similar to the evo 3. It does seem that most of the guys running foam are frowning on the oneway front diff I dont really know anyone who is using a oneway front diff with foams.