i have 2 gordon seros yamaha r6s for sale. 04 motor is complete, bored 2mm over, je pistons, carrilo rods, light weight clutch, head milled ported and polished, intake cam changed, light weight crank, cams degreed, alchohol carbs updated in 2011, wiring harness, coils, ignition box set at 15,500 rpm, 19 races on engine since rebuild, 12 wins this year for this engine, ran in an upright minisprint, oil and filter changed every 3 races mobil 10w-40, charging system on engine, case saver, fuel pump and regulator, paid $8500 for engine new, asking $4000 obo. also have an 05 gordon seros stock engine only for sale, 2 wins on this engine this year, engine has a full season of racing on it, have stock ignition box for it and a set of coils, $1000 obo. also have 2 spare fuel pumps and regulators to go with engines. jamie paul home#937-456-9495 cell#937-533-6033.