While the Full size cars are almost the same size length/width except for a wider track on the Buick, the differences in the models are eggagerated by the difference in scale, 1:25 Stude vs. 1:24 Buick. Here the difference in track was such that I had to narrow the rear axle by a scale foot almost. Most of that was because of the width of the tires. So the surgery has begun.