My colsed cooling system is installed,,, wasn't too bad of a job, my back is still screaming at me from being bent over leaning into the engine room. I am going to run it with distilled water for a few runs before flushing it out agin than filling with antifreeze coolent. It is a Monitor products kit, it did come with everything needed except for a smalll person to get down inside the engine compartment,,, I had to figure out some new hose routing and move the drive resevoir over a little bit, now i need to get the dam boat out on the water!!!