I am a fully licensed supplier.F14 TOMCAT -CPU-U27.L1SKU: SND-27F14C$13.00PriceQuantity*Add to CartWILLIAMS ROMSU27.L1 TECH SPECSWilliams: F-14 Tomcat ROM Revisions Game Version L-1 U26 : Checksum: 9156 U27 : Checksum: 29A1 ROM REMOVAL & INSTALLATION INSTRUCTIONS https://www.pinballrom.com/_files/ugd/0a3635_1f0af8ba09644eb78d30e50f112cf374.pdf