I understand that it is not all cubic inches. But at 12.3 I don’t think I am that far off. The car works pretty well. I am not at the limit with traction. It does not slip at the line so I am not overpowering the car right now. Plus, I only have 15 or so trips. I am the weakest link. I am ready to do what is needed to make it work but I may also change my goals. As it is, I want to get the most out of what I have. The current situation is not doing so.