UP FOR BIDS IS A CUSTOM BUILT YAMAHA YZ HILLCLIMB RACE BIKE. THIS BIKE WAS RACED IN THE LATE 70s UNTIL THE EARLY 80s. THE FRAME VIN #1J4-101773 AND THE ENGINE VIN #R5-030375. IM NOT SURE OF THE EXACT PRODUCTION YEAR. THE FRAME HAS BEEN ALTERD TO ACCOMEDATE A MASSIVE 350 TWIN ENGINE FROM THE SAME ERA. IT HAS AN EXTENDED SWINGARM AND BASSINI EXPANSION CHAMBERS. THIS BIKE HAS BEEN IN STORAGE FOR AWHILE AND I CURRANTLY HAVE IT ON DISPLAY IN MY HOME. I WAS TOLD THE TOP END IS FRESH ON THE MOTOR. IT DOES SEEM TO HAVE ALOT OF COMPRESSION. I HAVE NEVER TRIED TO RUN THE BIKE BUT I CAN ONLY IMAGINE THE POWER. I HAVE SOME OF THE BIKES VINTAGE TROPHYS THAT I WILL SEND TO ITS NEW OWNER. THE BIKE IS BEING SOLD IN AS-IS CONDITION WITH A BILL OF SALE ONLY. AGAIN I DO NOT KNOW WHAT IT WILL TAKE TO RUN THE BIKE BUT I WILL ANSWER ANY QUESTIONS YOU MAY HAVE. I PREFER EMAIL BUT I WILL RETURN YOUR CALL 618-451-7167. I WILL ASSIST ANY USHIP PERSONEL. I CAN ALSO HOLD THE BIKE AS LONG AS NECESSARY FOR PICK UP. THANKS AND AS ALWAYS !!! HAPPY BIDDING !!!