Here are a few places you might try. Remember that early 1800's and
122's shared many of the same parts. Particularly brakes, suspension,
motor and transmission.
http://www.classicvolvoparts.co.uk/pages/BrookhouseContents.html
http://www.p1800.com/parts.html
http://www.scandcar.nl/defframe.htm
http://www.cvi-automotive.se/
http://www.swedishclassics.com/
http://sw-em.com/swemkits.htm
http://www.xs4all.nl/~chdrost/ussuppliers/ussuppliers.html
http://www.vintageimparts.com/
Bob