farmerjohn,
Checkout remcorsprayers.com or go on over to Howe. They are pretty easy to find, take the North Howe exit on 75 and then turn right at the stop sign. Then go South about three blocks and you'll find them on the West side of the street.
Galen is pretty sharp on the sprayers and can help you set up a boomless rig. I'd have to go check, but I think they used 3/8" pipe with a reducer on the end for the Tee Jet nozzles.
I bought a 300 gallon boomless sprayer from them last spring and have been pretty happy with the setup. My pasture is so rough that a sprayer with booms would never survive.
Remcore Inc.
504 S. Denny
Howe, TX.
903-532-6241