I just found a Jensen wood boiler for $100 It says 78-37 on it The guy paid $350 8 years ago and never hooked it up It has a water jacket and a presure gage on top and he says it is ok so it should be ok in a presurized system. It is fan forced through the ash pan I think, it has a shaker grate and firebricks on the bottom. I currently have a homebuilt one of dubiuse quality, I would like to get a gasifier in a couple of years, so what I am looking for is something to hold me over. any info would be appreciated. Thanks.