running the circle block and the 2.0 block is going to give you about 1.0 deg toe in in the rear. I feel this car needs more toe in to run well. The problem is on carpet too much toe in will make your car slower through the turns. Probably easier to drive but definitely will scrub more speed. The 2.0 wide allows you to run 2.0 degrees of toe in and scrub less speed AND keep the hinge pins wider which will increase stablity. It's kind of like running a Long Arm setup VS a Short Arm setup for thoses of you who have run the BK2 or MF2. The overall length doesnt change, just the pivot places.