George,
Getting back to the issue of tire size, you pick the rims and tires that you think will look good on the car, period.
Build the engine to suit the performance level that you are trying to achieve.
Gear it so that the car will behave like it should when you are going down the road.
There is more than one way to put it all together and make it work. Have you read Leo's book? have you done a performance build on anything before, so that you have some baseline experience to draw from?
