[Tommy]

Let me see if I can add to the confusion a little. If the brake line pressure, the brake components, wheels and tires are the same on all four corners, the thing most likely to cause one wheel to lock up before others is the amount of weight on it. Tires with less weight will lock up before tires with more weight. So, on a normal car the rear tires will tend to lock up before the fronts due to "weight transfer" during braking. Manufacturers routinely account for this by using different components in the rear to reduce its braking effectiveness. ... If the brake components are the same and one front tire locks up before the other, it is likely because there is less weight on that tire than the other (e.g., the engine is offset to one side a little).

Jerry has been suggesting actions to first confirm that your brake components (i.e., line pressure, caliper alignment, etc.) are as they should be. After you confirm they are right, the next logical step would be to get corner weights and adjust your springs if required to balance them.