The Formula Pro USA Western Championships is affiliated with the SCCA Pro Racing F4 program, competing on the same weekend as SCCA club and non-club events on the west coast. The series uses and the same Ligier JS F4 chassis and Honda Civic Type R engine as the F4 U.S. Championship. FP4 will also use similar rules and regulations as the F4 U.S. Championship. To review more about the series click below: