I ordered this for a marine application, I installed it on a Mercruiser 330 (Chevy 454ci). It came in place as pictured and as described. Removed the old Quadra Junk carburetor, installed an adapter plate, rerouted the fuel line and routed the connecting hardware. I didn't adjust anything at all, just screwed it in, cranked it a few times, and bled it a few times and my old 454 came alive after 3 years of inactivity. My boat weighs 5,000 pounds unloaded but with all my scuba gear it will go 47 mph with 4 divers and 2,000 pounds of scuba gear.