I found this thread last night while looking for a replacement fluid reservoir for the windshield washer. I thought it interesting what this guy has done.
https://forum.ih8mud.com/40-55-series-tech/201296-sor-universal-washer-fluid-bottle.html
https://forum.ih8mud.com/40-55-series-tech/201296-sor-universal-washer-fluid-bottle.html