The World Cup Finals: Import vs Domestic (WCF) is the last all-quarter-mile heads-up race, and it attracts the fastest cars around. Recently, promoter of the WCF, Jason Miller, made a change to the Extreme Front Wheel Drive class (XFWD) that was designed to reduce oil downs, but it also generated some controversy.

In 2024, the XFWD class had a major issue with oil downs during the WCF event. It caused massive delays and impacted how the event progressed. The WCF is known for being an event that runs like a Swiss watch, and Miller knew a change needed to be made. When the WCF rules were released for 2025, they introduced a billet block rule for the XFWD class and oil down penalties.

There was some big pushback from racers and fans about the new rules for XFWD. Miller took the feedback into consideration and made some adjustments. His goal was simple: to provide an acceptable compromise that would also help keep the event moving. OEM and aftermarket blocks are allowed; the dip stick must be bolted down, plus full containment diapers and pans are required on every vehicle. You can read the revised rules here.

Miller cited in the rules section for XFWD that a big reason for the changes was the 31 cleanups during the WCF for the 43 cars that tried to qualify for the class. The thought on billet blocks was that they would provide better containment when there was a catastrophic failure versus an OEM cast block. Miller is also looking at working with tuners, racers, and promoters for future solutions when it comes to turbos for the class in 2026 to help fight engine failures.

Miller hopes that proactively working with the XFWD community will allow the popular class to grow, continue to be a part of the WCF, and not have as many oil down issues as it did in 2024.