I'd pass. A used V1 with the straight cut gears that needs repairs and is missing the pulleys, FMU, bypass, fuel pump, etc? Have you priced getting all the missing parts? If you still want to buy it, run the serial # through Vortech and see if it was ever rebuilt. If I remember, Vortech gets about 800 or so to repair and upgrade the V1 to V2. For that amount of money you can buy a good used V2 complete setup. I've seen plenty with different pulleys, timing controls. etc for around $1500-$1800 all day long. Personally, I would never buy a used supercharger unless I could inspect it in person and then only after checking with Vortech to see if it was rebuilt.