This is a Predator 6000 PXI, it comes with original manual that shows complete breakdown, adjustments and detailed rebuilding instructions. Also included is adjustable throttle linkage, 3 metering cams and intake spacer. It's been off a vehicle for awhile, so I can not verify the operating condition. I do know that carb was on a 10 second Chevelle at one time and performed great. I was a bit confused with the reserve price, and long story short- no reserve this time.