Ok guys here it is. I have a billy goat 16 hp debri loader but its just not powerful enough., plus I need a backup for it has broken down on me two times during peak leaf season on the same year I bought it new. I've had it for 4-5 seasons now and it's still running pretty good, but when it rains kiss the suction good buy for a couple days until they dry.......So I think i can save some money by perhaps buying a 22hp engine and the housing and impellar from like billy goat or giant vac and then have my welder do all the tubing an dthe frame that goes up and into the truck. I think its possible to have a better engine and save around $2,000 plus . Is it worth it? New billy goat units run about 22 hp run between$4,600- $5,000. Engine price about $1,200-$1,500, the impeller a bit pricey maybe around $500, housing custom fit around impeller a guess $500, hose $150, and then my welders fee possibly $1,000. I guess i thought the machines were easy to duplicate in contrast to say piecing together a lawn mower and i think it could end up being a better unit for less cost. Im basically ordering all the parts and giving it all to my welder, not very time consuming. Give me some feedback? Thanks guys.