The original mounted vac came with the 1650 I acquired 2 yrs ago.New coil on b&s engine and then found it only took a few minutes to fill so off it came ...Finally I figured a use for it ...By mounting it on wheels it became a blower that really pushes some air.Son-in-laws yard is quite large with a lot of big maples so I started this reuse as a gift to be able to ride instead hours walking with a backpack blower...I still have to design a shaped outlet but we are both excited to see it work this fall...What's in your junkpile?? A guy told me yrs ago there are no new ideas just reapplication of old ones..(That was before computers)